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{{Era|H2|H3|HGN}}
{{Status|Canon}}
{{Ratings}}
{{Center|For the campaign level, see [[The Ark (level)]].}}
<center>''Were you also looking for [[The Ark (Level)]] or [[The Portal]]?''</center>{{clear}}
{{Megastructure infobox
{{Haloring
|image=[[File:TheArkHW2.png|300px]]
|name=Installation 00
|description=Disk with a hollow core and eight curved arms
|image=[[Image:ARK.jpg|300px]]
|location=[[Intergalactic space]], over the galactic plane, 262,144 light years from galactic center
|Location=262,144 light years from galactic center
|anchor=
|Monitor=Unknown, possibly [[Mendicant Bias]]
|type=[[Ark|Ark installation]]
|Status= Unknown, possibly destroyed or heavily-damaged
|function=Conservation installation, Lifeworker research station, Halo construction foundry and remote activation facility
|Date of Construction=[[Forerunner-Flood War]]
|caretaker= [[000 Tragic Solitude]] {{c|destroyed}}
|Date of Destruction=  Possibly After The Battle of Installation 00
|constructed=c. [[98,445 BCE]]-[[97,445 BCE]]{{Ref/Note|The original Halo Array was created after the extreme faction of Builders won their political battle with the Prometheans and the Didact was forced into exile, in approximately 98,445 BCE. Installation 00 and its newer array of six rings was created some time after the first Ark, placing its time of construction sometime in the millennium before the firing of the Halos.}}
|Appearance=Flower like
|destroyed-title=Heavily damaged
|Atmosphere=Suitable for all forms of life except grunts (methane tank) during the human-covenant war, including the flood
|destroyed=[[2552#December|December 11, 2552]]<ref name="Fortitude">[http://halo.xbox.com/en-us/intel/featured/video/herofortitude/bfe5038b-314a-4f17-a6be-f7613e0e3788 '''Halo Waypoint''', ''Hero-Fortitude'']</ref><ref name="Array">[http://halo.xbox.com/en-us/intel/featured/video/the-halo-array/7ec5ea56-3d8c-4644-a760-5baa8f35166c '''Halo Waypoint:''' ''The Halo Array'']</ref><ref name="Brutes">[http://halo.xbox.com/en-us/intel/theuniverse/characters/video/the-brutes/60f8041d-9d28-47bc-9447-65ba3d133abd?page=1 '''Halo Waypoint:''' ''The Brutes'']</ref><ref name="vis">'''[[Halo: The Essential Visual Guide]]''', ''page 14''</ref> {{c|Fully repaired by [[2559#March|March 2559]]}}{{Ref/Reuse|HW2}}
|Range=
|diameter={{Convert|127530|km|mi|sigfig=5}}<ref name="vis">'''[[Halo: The Essential Visual Guide]]''', ''page 14''</ref>
|Firing Record=52
|surface width=35.3 hours {{c|adjustable}}{{Ref/Reuse|mythos ark}}
|Diameter=about 90,000-100,000km
|surface width-title=Day length
|gravity=1G{{Ref/Reuse|vis}}
|surface temperature=-30°C to 50°C (-22°F to 122F°){{Ref/Reuse|vis}}
|atmosphere=1.0 ([[Wikipedia:Nitrogen|N<sub>2</sub>]], [[Oxygen|O<sub>2</sub>]], [[Argon|Ar]]){{Ref/Reuse|vis}}
}}
}}
{{quote|multi=yes|Miranda Keyes|343 Guilty Spark|q1=Where would someone go to activate the other rings?|q2=...Why, the Ark, of course.|[[343 Guilty Spark]] to [[Commander]] [[Miranda Keyes]].{{Ref/Reuse|Journey}}}}
'''Installation 00''', also known as '''the Ark''', the '''neoteric Ark''',{{Ref/Book|Id=Enc22P343|Enc22|Page=343}}{{Ref/Site|Id=CFEklund|URL=https://www.halowaypoint.com/news/canon-fodder-eklunds-ensemble|Site=Halo Waypoint|Page=Canon Fodder: Eklund's Ensemble|D=24|M=08|Y=2022}} '''the Great Foundry''' by the Covenant,{{Ref/Game|HI|Audio log (Halo Infinite)#Outpost Intel 9|Banished Audio log|Detail=Outpost Intel #09 - Unnatrual Defenses}} '''Oth Liqattu''' by the [[Banished]],{{Ref/Book|Enc22|Page=444}} and sometimes translated as '''Waypoint''',<ref name="CatalogWaypoint">[https://web.archive.org/web/20141014090727/https://forums.halowaypoint.com/yaf_postst248110_Query--Catalog-old.aspx '''Halo Waypoint''': ''Query: Catalog (old)''], [https://web.archive.org/web/20141013192621/https://forums.halowaypoint.com/yaf_postsm2963929_Catalog-Interaction.aspx#post2963929 '''Halo Waypoint''': ''Catalog Interaction'']</ref> is a [[Forerunner]] installation from which the entirety of the [[Halo Array]] can be activated.<ref name="Journey">'''[[Halo 2]]''', campaign level ''[[The Great Journey]]''</ref> Installation 00 also functions as a potential safe haven from the Halo Array's strategic pulse, and as a facility to construct replacement Halos if necessary. The Ark is situated [[Intergalactic space|outside]] the [[Milky Way|galaxy]], about 2<sup>18</sup> (262,144) light years from the galactic center.<ref name="The Ark">'''[[Halo 3]]''', campaign level ''[[The Ark (level)|The Ark]]''</ref> Although later universally known as "the Ark", Installation 00 was originally one of two installations identified as [[Ark]]s, the other being the older [[greater Ark]]. Due to this, Installation 00 was also referred to as the '''lesser Ark''' to differentiate it from the much larger greater Ark, whose foundry produced the original array of rings 30,000 kilometers in diameter, as opposed to the 10,000 kilometer-wide foundry of Installation 00.<ref>'''[[Halo: Primordium]]''', ''pages 343-344''</ref>


'''Installation 00''', also known as '''The Ark''', is an enigmatic [[Forerunner]] installation from which all the [[Halos|Halo Installations]] across the galaxy can be activated<ref>[[Halo 2]] [[The Great Journey (Level)|The Great Journey]] Final cinematic.</ref> simultaneously. In addition, it functions as a safe haven from the Halo network's strategic pulse, and as a facility to construct replacement Halos. It was first mentioned by [[343 Guilty Spark (Monitor)|343 Guilty Spark]] at the conclusion of ''[[Halo 2]]'', where he explains the fail-safe protocol of [[Installation 05]] and the standby modes of the seven rings after its unexpected shutdown. The Ark is about 2<sup>18</sup> (exactly 262,144) light years from the galactic center.<ref> Halo 3 The Ark</ref>
==Overview==
[[File:HW2 Ark1.png|250px|thumb|left|The Ark.]]
The Ark was designed with a number of functions, one of which is to remotely activate the Halo rings from outside the array's blast radius. Installation 00 can be placed on standby mode via a fail-safe system that is activated by an aborted firing such as the one that occurred at the end of the [[Battle of Installation 05]]. In addition to serving as the firing control center for the Halo array, Installation 00 functioned as an automated factory to construct Halo installations, thereby ensuring that the Halo Array was always ready to fire.<ref name="Covenant">'''[[Halo 3]]''', campaign level ''[[The Covenant (level)|The Covenant]]''</ref>{{Ref/Level|Id=Halo|[[Halo 3]]|[[Halo (Halo 3 level)|Halo]]}} While originally designed solely as a construction and control center for the Halos, due to the [[Librarian]]'s influence, the Ark was given a secondary function as a safe haven for life in the galaxy in the case of a galaxy-wide activation of the Halos; this is also the source of the name "the Ark".<ref name="c274">'''[[Halo: Cryptum]]''', ''page 274''</ref> Knowing that the Array would defeat the [[Flood]] through sterilizing the galaxy of any neurologically complex life, the Forerunners planned to preserve all life by storing it on the Arks and other preservation facilities. According to this plan, known as the [[Conservation Measure]], the Librarian was to index every [[Sentience|sentient]] species in the [[ecumene]] and bring specimens of each to the Ark. These sentient species would be stored on the Ark and would later be reseeded on their original homeworlds after the Halo Array had been activated.<ref name="Terminals">'''Halo 3''', [[Terminal (Halo 3)|Terminals]]</ref>


==Layout and Function==
===Topography===
[[Image:Ark.JPG|thumb|right|A Holographic representation of the Ark.]]
[[File:Ark surface 3.jpg|thumb|250px|A surface view of Installation 00's arms. The installation's artificial star can be seen in the sky.]]
[[Image:923831-Full.jpg|thumb|right|The Elite separatist Fleet engaging the [[Truth's Fleet]] over the Ark.]]
====Ecology====
[[Image:Ark2.JPG|thumb|right|A [[Pelican]] approaching the true Installation 00.]]
The Ark has a habitable surface on each of its spokes and on the majority of the inner circle, apart from the foundry. This terrain was intended to support cataloged life forms prior to being reseeded throughout the galaxy.<ref>'''[[Halo: Cryptum]]''', ''page 334-336''</ref> These landscapes and biomes are as diverse as those of Earth and of the Halos, including deserts,{{Ref/Reuse|The Ark}} taiga,{{Ref/Reuse|Covenant}} and deciduous forests.<ref>'''[[Halo 3]]''', multiplayer level ''[[Isolation]]''</ref> Several bodies of water occur across the installation. As such, the Ark can sustain its own ecosystem, providing a variety of habitation for many kinds of life.
[[Image:ARK2.jpg|thumb|right|The Ark compared to the planet Earth and Halo.(Courtesy of Stephen Loftus)]]


Installation 00 resembles a massive wheel with a series of eight curved arms, similar to an octopus or squid. The [[Ark Core]] is the stripped remnant of a material-rich planetoid, asteroid, or other celestial body used for the construction of the Halos, which the Ark constructs. This is possibly where the Forerunners found a planet able to sustain human life outside of the galaxy out of the Flood's reach. Then they started constructing the Foundry around it and later the Ark. The entire upper surface is Terra-formed, with oceans, forests and even a large desert, where [[John-117|Master Chief]] first makes landfall. The structure is the largest Forerunner construct seen in the series, possibly a hyper-structure knowing that [[Halo Array|fortress worlds]] are 10,000 km. in diameter approximately. It is theorized to be an [[wikipedia:Alderson Disk|Alderson Disk]]. A simple inspection of the holographic representation reveals it to be anywhere from 90,000 to 100,000 kilometers (55,890 to 62,100 miles) in diameter<ref>http://carnage.bungie.org/haloforum/halo.forum.pl?read=871617</ref>, making it the largest Forerunner construct known. Of course, this may be incorrect, since there are thousands of [[Forerunner]] constructs scattered throughout the Galaxy.
Like most Forerunner constructs, the Ark's atmosphere is similar to that of Earth, being mostly comprised of [[oxygen]] and [[Wikipedia:Nitrogen|nitrogen]]. This means that all known sentient species, with the exception of the [[Unggoy]], can survive on the surface without any form of protection. As with the Halos, Installation 00 features a widely varying range of climates.


The Ark is large enough to support a small planetoid in its center, which is surrounded by a void. This void conceals the Halo Foundry, which constructs rings and sends them to their orbital destinations. Most interestingly, the Ark is not actually in the [[Milky Way]], and the galaxy can actually be seen in the sky, as noted by a stunned [[ODST]] soldier at the start of the level ''[[The Ark (Level)|The Ark]]''. As such, it's outside the believed range of any [[Halo]] installation. The Ark also has an artificial sun floating above it. An observer can see this most clearly on the level [[Halo (Halo 3 Level)|Halo]] when looking up at it. Much of its massive size and the core in the middle can be seen during the [[Warthog]] run on [[Installation 04 (II)]].
The activation of [[Installation 08]] inflicted substantial damage to the Ark. While some life support units remain intermittently active, they were in severe disrepair. Combined with the artificial sun's weakened output, weather conditions on the surface have became highly volatile. Most indigenous fauna have perished, either from the Halo pulse itself or the extreme weather that came afterwards.{{Ref/Reuse|EH}} However, some wildlife survived and were seen during [[Operation: FAR STORM]].{{Ref/Reuse|Hunters}} After the destruction of [[000 Tragic Solitude]], [[Luther Mann]] stated a belief that it was in fact the rogue [[Monitor]] who was behind the weather conditions as part of his plan for revenge. Once Tragic Solitude was destroyed, the weather returned to temperate conditions.<ref>'''[[Halo: Hunters in the Dark]]''', ''pages 345-346''</ref>


The two shown primary functions of Installation 00, are as a remote for activating the entire Halo network with safety of being out of the Halos' range, and as an automated construction facility for the creation of replacement [[Halo]] installations (ensuring that the network continues to operate even if any rings are destroyed). The construction facility is in the Ark's Core, concealed by clouds.
While under repair by [[Retriever Sentinel]]s, there would be a new shift in the Ark's surroundings as the Sentinels repaired and rebuilt the Ark. Dense forests sprang up from pit-black, barren terrain over the course of a week and a particularly virulent strain of weed was checked by the reintroduction of voracious, insectoid parasites before it could strangle the budding plants nearby.{{Ref/Reuse|Healing of Old Wounds II}} The Ark showed itself to be remarkably adaptable to change, with giant tectonic plates rearranging, shifting and unfolding to form a new pathway across a chasm.{{Ref/Reuse|Healing of Old Wounds III}} Having begun in [[2557]], the process was completed by the arrival of the ''Spirit of Fire'' in [[2559]], leaving the Ark fully repaired and habitable again, though wreckage from the [[Battle of Installation 00]] persisted across the Ark's surface.{{Ref/Reuse|HW2}}


After the level ''[[Floodgate (Level)|Floodgate]]'', the entire remainder of ''[[Halo 3]]'' takes place on or around Installation 00. While there, a number of conflicts including the [[UNSC]] and [[Covenant Separatists]], the [[Covenant Loyalists]] and [[Flood]] take place. [[Cortana]] claims that the premature firing of the [[Installation 04 (II)|second Installation 04]] by the [[Master Chief]] "did a number on the Ark". It was heavily damaged, but no one knows what (if anything) has survived on the surface.
====Locations====
*[[Mahsko]]
*[[Foundry (location)|Foundry]]
*[[Fort Jordan (location)|Fort Jordan]]
*[[Central Hub]]
**[[Installation 00 Citadel]]
*[[North Spire]]
*[[South Spire]]
**[[Henry Lamb Research Outpost]]
**[[Ship Graveyard]]
**[[Forerunner Treatment Installation]]
*[[Epsilon Spire]]
**[[Refugia Epsilon 001]]
***[[Reef of Thieves]]
****[[Ridge Nineteen]]
***[[Drifting Lands]]
****[[White Dune]]
***[[Chasm Lands Biome]]
**[[Refugia Epsilon 026]]
***[[Epsilon Cartographer]]
**[[Refugia Epsilon 050]]
***[[Broken Plain]]
*[[Epsilon Wedge]]
**[[Refugia Core 000]]
***[[Epsilon Clarion]]
****[[Outer Gallerium]]
**[[Refugia Core 001]]
**[[Refugia Core 010]]
***[[Maze Rift]]
**[[Refugia Core 101]]
**[[Refugia 500]]
*[[Site Ricochet]]
*[[Translocation portal Epsilon]]
**[[Long Valley Moor]]
***[[West Ridge Observation Point]]
**[[Terminus Basin]]


==Atmosphere==
===Astronomy===
Along with all [[Forerunner]] constructs, the Ark consists of an atmosphere similar to [[Earth]], comprised of [[oxygen]] and [[nitrogen]]. This makes all [[Human-Covenant War]] species able to live on this planet (excluding [[Grunts]] who depend on methane tanks to sustain life). Also, like Earth and the other Installations, weather radically changes on the Ark.


==History==  
==History==
Installation 00 is a part of the Forerunner construct designed to wipe the Flood from the [[Galaxy]]. Located 2<sup>18</sup/> (about 262,144) light-years outside the Milky Way galaxy center. Installation 00 is safe from the [[Halo]] effect (as it is referred to by the Forerunners in the terminal transcripts) that kills all sentient lifeforms; the main Forerunner behind its use was [[Didact]]. The purpose of the installation is to remotely activate every [[Halo]] ring, from outside the blast radius. This is a fail-safe system that is only activated by an aborted firing such as the one that occurred at the end of ''Halo 2''. In addition, Installation 00 can also function as an automated factory to construct replacement Halo installations, thereby insuring that the Halo array is always ready to fire. 
===Forerunner-Flood war===
[[File:Array.png|thumb|left|250px|Installation 00 sending the Halo Array through a [[slipspace portal]] during the [[Forerunner-Flood war]].]]
{{quote|Every vessel we can fill, we send to the Ark. I dare not cease the mission. Not now, not until I've done all I can. Each one of these souls is finite and precious. And I'm close. Close to saving them all.|A message from the [[Librarian]] to the [[IsoDidact]].<ref>'''Halo 3''', [[Terminal (Halo 3)/One|Terminal One]]</ref>}}


{{quote|Every vessel we can fill, we send to the Ark. I dare not cease the mission. Not now, not until I've done all I can. Each one of these souls is finite and precious.|--Transcript of a message from the Librarian to [[Didact]], interpreted post-cataclysm and retrieved from the first [[Terminals|Terminal]] on the level "[[The Ark (Level)|The Ark]]"}}
Like the rest of the newer, more efficient Halo installations, Installation 00 was constructed sometime between [[98,445 BCE]] and [[97,445 BCE]] under orders of [[Master Builder]] [[Faber]], to address problems with the [[greater Ark]] and its larger Halos. While plans for the second Ark had existed for some time, its construction was delayed by the [[Old Council]] to avoid the Builders from gaining too much power.<ref>'''[[Halo: Silentium]]''', ''page 45''</ref> The lesser Ark, as it was known at the time, was designed to produce smaller but much more powerful Halo rings, which could be transported more efficiently and could deal far more widespread damage. Until the very last days of the [[Forerunner-Flood war]], the lesser Ark, its new Halos, and its location were kept a well-guarded secret; only the most top-tier Forerunners knew of its existence, and the only one who knew the exact coordinates of the installation was Faber. Whereas the greater Ark acted as the Forerunners' final line of defense and command center, the lesser Ark would serve the function of a last fallback point where its own array of rings could be swiftly distributed to their designated locations across the galaxy and fired to cleanse the galaxy of all sentient life as a last resort.<ref>'''[[Halo: Silentium]]''', ''String 33''</ref>


Apparently, while the rest of the Forerunners attempted to defeat the Flood through any military way possible, a plan B was also approved to be put into the works, which included the construction of the Halos, [[Shield World]]s like [[Onyx]], and The Ark.  
[[File:HM LastTimeYouAskedMe.jpg|thumb|250px|The IsoDidact activates the Halo Array from Installation 00's citadel.]]
In the endgame of the Forerunners' war with the Flood, the Forerunner {{Class|Contender|artificial intelligence}} [[Mendicant Bias]], which had been [[logic plague|corrupted]] by the [[Gravemind]] and defected to the Flood, attacked and destroyed the greater Ark, killing the majority of the remaining Forerunners who had taken refuge there. Using coordinates provided by the Master Builder, a handful of survivors, including the [[IsoDidact]], managed to escape to the lesser Ark where they prepared their weapons of last resort. In order to buy the IsoDidact time, the Librarian traveled to [[Earth]], broadcasting a feint transmission intended to draw the Flood's attention to her. She spent her last days in the plains near [[Mount Kilimanjaro]], near the site of the [[Portal at Voi|slipspace portal]] to Installation 00. Mendicant Bias knew of the secret Ark and how to access it through the [[Keyship]]s, though he did not know of its exact location. In order to devise the best possible defense against Mendicant Bias, the Forerunners deployed [[Offensive Bias]], a military AI formerly in control of the greater Ark and Mendicant's replacement, and sent it to counter Mendicant Bias' fleet in advance before it could reach the Ark. While Offensive Bias [[Battle of the Maginot Sphere|engaged Mendicant's fleet]], the IsoDidact completed preparations for the Halo Array and fired the rings from the Ark, purging the galaxy of all life.


In this final resort plan, the [[Librarian]] was to index every sentient species in the Galaxy, and bring some to the Ark, and then ''presumably'' some [[Forerunners]], and these last sentient species would hide in the Ark's secret location, until the [[Flood]] starved and they could go back to the [[Milky Way]].
Following the Array's firing, Offensive Bias defeated Mendicant Bias within minutes. Offensive decided to spare the last portion of its opponent and delivered it to Installation 00 for study. There, the remaining Forerunners, led by the IsoDidact, held a trial for the AI for betraying the ecumene. The Didact decided to keep Mendicant alive as it had intimate knowledge of the Flood and could be called upon in case of their return. Bias was entombed in the installation with only one thought allowed to him: atonement.<ref>[http://www.youtube.com/watch?v=a3YLl2NLVFA '''Halo Waypoint''' - ''The Trial of Mendicant Bias'']</ref>{{clear}}


However, things did not go as planned, as the Forerunner military AI [[Mendicant Bias]] turned on the Forerunners, and began assisting the Flood. Mendicant Bias knew of the Ark, and how to access it through the [[Key Ship]]s, but did not know of its exact location. The Forerunners then constructed another military AI, [[Offensive Bias]], in order to devise the best possible defense against Mendicant Bias and his fleet. The Librarian detonated all of the Key Ships in her command, and spent her last days upon a mountain (possibly Mt. Kilimanjaro) near the site of the portal to the Ark, for aesthetic reasons.
===Battle of Installation 00===
[[File:H3 ArkBattle.png|thumb|left|300px|The Fleet of Retribution and Truth's fleet meet above the Ark.]]
{{Main|Battle of Installation 00}}
Following the [[Prophet of Regret]]'s botched [[Battle for Earth|invasion of Earth]] on [[2552#October|October 20, 2552]], the [[Prophet of Truth]] dispatched a [[Jiralhanae]]-led [[Truth's fleet|support fleet]] to pick up what is left of the Regret's [[Fleet of Sacred Consecration|forces]] at [[Kenya]] and to uncover what he believed to be the Ark.{{Ref/Film|Id=Oct20|Film=Halo Waypoint|Story=Ten Twenty|StoryLinkText=Ten Twenty}} By [[2552#November|November 17]], the [[Covenant]] had uncovered the structure they had spent the last month unearthing. Truth, through his [[Forerunner Dreadnought]], activated the device, which was actually just a [[Portal at Voi|portal-generating structure]] which led to Installation 00.{{Ref/Level|Id=TheStorm|Game=Halo 3|Level=The Storm}}


==Portal==
Truth led his fleet through the portal; after defeating a Flood invasion of the town of [[Voi]], a joint [[United Nations Space Command]] - [[Fleet of Retribution|Sangheili]] strike force followed the Prophet's forces.<ref name="Floodgate">'''[[Halo 3]]''', campaign level ''[[Floodgate]]''</ref> Upon their arrival on [[2552#December|December 11]],{{Ref/Reuse|Fortitude}} the latter force were attacked by the Covenant, which held a 3:1 numerical advantage.{{Ref/Reuse|The Ark}} Despite this, the [[Sangheili]] [[Fleet of Retribution]] and the UNSC [[Battle Group Victory]] crushed Truth's forces.{{Ref/Reuse|The Ark}}
{{main|Portal}}
[[Image:Ark.jpg|thumb|right|The Portal to the Ark, near [[Voi]], [[Republic of Kenya|Kenya]] opens in the Halo 3 Announcement Trailer.]]
The [[Portal]] is a [[Forerunner]] creation which is designed to open a [[Slipspace]] rift to enable access to Installation 00. It is located near the city of [[Voi]] in [[Africa]].  


As first seen in the [[Halo 3 Announcement Trailer]] and numerous other promotional materials, this construct was originally thought to be the Ark itself; however, this was disproved with the release of ''Halo 3''. The Portal was partly uncovered when [[Prophet_of_Regret|Regret's]] carrier destroyed New Mombasa in [[Halo 2]], and completely excavated by Covenant Loyalist forces later on.  
After engaging the Covenant across the installation, [[SPARTAN-II program|Spartan]] [[John-117]] and [[Arbiter]] [[Thel 'Vadam]] entered [[Installation 00 Citadel|the citadel]], where they found Truth, who had become infected by the Flood and deactivated the array. Soon after 'Vadam killed the Prophet, effectively destroying the Covenant and ending the war, he, the Master Chief, and [[343 Guilty Spark]], the former [[monitor]] of [[Installation 04]], discovered that a [[Installation 08|replacement Installation 04]] was being constructed by the Ark's [[Foundry (location)|Foundry]].{{Ref/Reuse|Covenant}} The Spartan and the Arbiter soon rescued the AI [[Cortana]], who held Installation 04's [[Activation Index]], from the Flood-infested Covenant capital city, [[High Charity]].<ref>'''[[Halo 3]]''', campaign level ''[[Cortana (level)|Cortana]]''</ref> They, with [[Sergeant Major]] [[Avery Johnson]], assaulted the Halo's [[Control Room]] to activate the ring, destroying both the Flood and the remaining Covenant forces. They succeeded, though Johnson was killed by the monitor. While Guilty Spark refused to allow ''his'' new Halo to be destroyed, he also implied that he was protecting the Ark. The partially constructed installation's activation tore the ring apart and severely damaged the Ark.{{Ref/Reuse|Array}}{{Ref/Reuse|Brutes}}{{Ref/Reuse|Halo}}
{{clear|left}}


In ''Halo 2'', the [[Prophet of Regret]] moved his carrier above New Mombasa and deployed a large ground army. UNSC [[Marines]] were subsequently able to beat the Covenant to a retreating standstill, apparently causing the Prophet to attempt a dangerous atmospheric [[Slipspace]] transition.
===Post-battle===
[[File:HaloLegends-Origins-ArkHalo.png|250px|thumb|Installation 08 fires over the Ark, severely damaging it.]]
In [[2553|March 2553]], the [[Office of Naval Intelligence]] deployed an automated probe-carrying spacecraft to the damaged Ark using advanced slipspace technology. The ship arrived in November and dispersed its probes, although all communications with the devices were cut off after initial transmissions confirming the Ark's survival. In response, the {{UNSCShip|Rubicon}} was sent from [[Luna]] in December 2553 to conduct a more thorough investigation of the installation's ravaged surface.<ref name="hitd c2">'''[[Halo: Hunters in the Dark]]''', ''Chapter 2''</ref> Due to the damage dealt to the Ark's life support systems and its artificial sun, heavily inclement weather became the norm.<ref name="EH">'''[[Eleventh Hour reports]]''', ''part 4''</ref>


By the time of ''Halo 3'', Covenant Loyalists began excavating the portal from the crater and were able to completely uncover it. The Prophet of Truth activated it at the conclusion of the level ''[[The Storm]]''. It formed a massive portal, in which the Forerunner ship immediately entered (presumably carrying [[The Prophet of Truth|Truth]]), followed immediately by the Covenant Loyalist ships. At the end of the level ''Floodgate'' human and Covenant Separatists forces resolved to follow Truth's ships through the portal, and ended up at Installation 00.  
The {{UNSCShip|Rubicon}} carried several [[remote contact team]]s, who landed on the damaged Ark and attempted to find the source of the mysterious signal. After about eight days, contact with all teams was lost; only one team, [[RCT-06]], returned, having sustained heavy casualties and carrying with them a device of unknown nature. The armature's origin was subjected to debate, but it was believed by the team to be the source of the beacon picked up by the initial investigative group.{{Ref/Reuse|EH}} The device, actually a broken, barely active [[monitor]], began to relate its past life as a human: [[Chakas]]. Though the ship's ONI attaché initially doubted the veracity of the monitor's account, the science team leader pointed out that it was consistent with the "[[Halo: Cryptum|Bornstellar Relation]]" found on [[Onyx]].


At the end of the game, the damage caused to the Installation caused the portal to collapse, severing the ''Dawn'' in half as it passed back through. The forward section, in which the [[Arbiter (character)|Arbiter]] had been inside of, made it back to Earth, plunging into an unspecified body of water. Humans soon rescued the Arbiter. The aft section of the ''[[Forward Unto Dawn]]'', containing Master Chief and Cortana did not make it through the portal, and were stranded in an unknown location of deep space.  
[[File:TSPL.png|250px|thumb|left|000 Tragic Solitude observes the heavily damaged Ark.]]
Eventually, the monitor revealed that it was none other than [[343 Guilty Spark]] himself. Claiming that he knew the location of the [[Librarian]], whom he believed to be alive, Spark subsumed the ship's AI, knocked out the crew via the life support systems, and hijacked the ship.<ref>'''[[Halo: Primordium]]''', ''pages 377-379''</ref> Communications with the ''Rubicon'' halted within 48 hours of its last report. Search and rescue teams were then deployed to the site, but reported no findings.{{Ref/Reuse|EH}}


Due to the fact that slipspace travel is not instantaneous, and that the nature of travel through the portal between Earth and the Ark is unspecified, it is possible that the ''Forward Unto Dawn'' could have been severed in half while exiting, not entering, the portal on the return journey; this could explain how Master Chief survived the ring's effect, and also allows for the tail end of the ''Forward Unto Dawn'' to be arguably anywhere in the galaxy.
The last of its ground team, [[Bobby Kodiak]], was left stranded when the ''Rubicon'' left, and mortally wounded by attacking [[chaefka]]. It was then that he was contacted by the Ark's monitor, [[000 Tragic Solitude]], who had survived the Ark's devastation and sought to repair the station and get revenge. Offering him a chance to live, Tragic Solitude rescued Kodiak and mended his body with cybernetics, turning him into a cyborg and putting him under the monitor's control. For the following two years, Tragic Solitude partially repaired the Ark and prepared for an attack on the galaxy. Tragic Solitude was able to repair the Ark end of the [[Portal at Voi]] and increase its power so that the portal would transport objects near-instantaneously between Earth and the Ark, but he could not activate the portal as the firing of Installation 08 had severed the monitor's control over it.<ref name="Hunters">'''''[[Halo: Hunters in the Dark]]'''''</ref>{{clear}}


The portals to the Ark can only be activated using [[Dreadnought|Dreadnought-class]] Forerunner ships, of which only one is known to have still existed during the Halo trilogy. This characteristic of these ships has earned them the name "Key ships," due to their nature of being able to "unlock" the portals.
===Operation: FAR STORM===
[[File:Hunters in the Dark full cover.jpg|thumb|300px|[[N'tho 'Sraom]] and [[Frank Kodiak]] engage [[morolaath]] during Operation: FAR STORM.]]


==The Strip Mining Moon==
{{Main|Operation: FAR STORM}}
In [[2555]], the Ark was partially restored and Tragic Solitude enacted its plan. Using Kodiak to activate the process, Tragic Solitude initiated a countdown to the rings' firing in several weeks. This was so that someone within the Milky Way galaxy would open a portal to the Ark in an attempt to stop the countdown, allowing the monitor to dispatch its [[Retriever Sentinel]]s to kill all sentient species and mine their planets to repair the Ark. The countdown was discovered on the intact Halo rings soon after and a human-Sangheili joint task force departed to the Ark through the [[Portal at Voi]]. The expedition's ship was intercepted and brought down above the Ark by Tragic Solitude's Retrievers, but the crew survived and managed to reach the Array's control center and stop the countdown. However, the portal was still open and Tragic Solitude deployed a fleet of Retrievers to Earth in an attempt to mine the [[Sol system]]'s worlds, causing heavy damage to the region surrounding the portal as well as the [[UNSC Home Fleet]]. However, the UNSC-Sangheili crew managed to thwart the monitor's plan and the Retrievers were recalled, with the monitor ending up destroyed. UNSC reinforcements were deployed through the portal to the Ark soon after and rescued the expeditionary crew. With Solitude destroyed and the Retrievers now dormant, the UNSC began to establish research facilities on the Ark and study the Sentinels in hopes that they could be commanded to continue repairing the installation by strip-mining lifeless systems so that no one would be harmed in the process.{{Ref/Reuse|Hunters}}


{{Main|Strip Mining Moon}}
===Repairing the Ark and research===
'''The Strip Mining Moon''' is the open area at the heart of Installation 00, and is the automated factory for replacement Halo installations. Raw materials for the process are supplied by a planetoid roughly 1/3 the size of Earth. The moon is large enough to make several replacement Halos, as seen in ''Halo 3'' when it produced a replacement [[Installation 04]]. [[Strato-Sentinel]]s are used to extract the materials.
In [[2557]], a human research team traveled to the Ark aboard ''[[Eden Rising]]'' to establish a permanent base on the Ark, the [[Henry Lamb Research Outpost]]. The scientists reactivated the dormant [[Retriever Sentinel]]s which were dispatched to lifeless systems to strip-mine them for the needed resources and under the guidance of the [[Smart AI]] [[Isabel]], began nudging along repair efforts.<ref name="Isabel">'''[[Halo Wars 2]]''', ''[[Phoenix Logs]]'' - ''Isabel''</ref> However, over time, the process became fully automated and the scientists could simply sit back and watch the wonder of a world being reborn.<ref>'''[[Halo Wars 2]]''', ''[[Phoenix Logs]]'' - ''The Healing of Old Wounds I''</ref> Within three months of the establishment of the [[Henry Lamb Research Outpost]], there would be a new shift in the outpost's surroundings as the Sentinels repaired and rebuilt the Ark. Dense forests sprang up from pit-black, barren terrain over the course of a week and archeologist [[Nathaniel Palmer]] monitored a particularly virulent strain of weed that was checked by the reintroduction of voracious, insectoid parasites before it could strangle the budding plants nearby.<ref name="Healing of Old Wounds II">'''[[Halo Wars 2]]''', ''[[Phoenix Logs]]'' - ''The Healing of Old Wounds II''</ref> The Ark showed itself to be remarkably adaptable to change, with Palmer witnessing as giant tectonic plates rearranged, shifted and unfolded to form a new pathway across a chasm.<ref name="Healing of Old Wounds III">'''[[Halo Wars 2]]''', ''[[Phoenix Logs]]'' - ''The Healing of Old Wounds III''</ref>
{{Clear}}


==Guilty Spark meets Mendicant Bias==
===New arrivals===
(04-343 is reference to 343 Guilty Spark. 343 being his number designation, 04 being the Installation he is assigned to.)
[[File:SOFaboveArk.png|thumb|left|300px|Captain James Cutter and Dr. [[Ellen Anders]] survey the Ark from high above it.]]
{{Main|Second Ark Conflict}}
{{Quote|And now the Ark's defenses stir, sensing the [[Banished|shadow of a threat]] that moves in spaces [[Cortana|Her]] eyes cannot see, intent on seizing the great factory of the Forerunners.|[[Curator]] on the Created and the Banished.<ref name="Mythos202">'''[[Halo Mythos]]''', ''page 202''</ref>}}
Following the [[Created conflict|Created takeover]] of human space on October 28, [[2558]] the Ark's failsafe measures prevented Cortana and her allies from being able to access the installation.{{Ref/Reuse|Mythos202}} A month later, the [[Banished]], led by the Jiralhanae warlord, [[Atriox]], [[Attack on Installation 00|laid siege]] on the UNSC bases on Installation 00, among them the [[Henry Lamb Research Outpost]].<ref>[http://www.gamespot.com/articles/halo-wars-2-new-story-details-and-images-revealed/1100-6440811/ '''GameSpot''': ''Halo Wars 2 New Story Details and Images Revealed'']</ref> Shortly after the Banished's attack, the {{UNSCShip|Spirit of Fire}}, drifting in space for 28 years, was abruptly transported to the Ark by a mysterious entity. Those on board the ''Spirit of Fire'' came into conflict with the forces of the Banished on the surface soon after. During the battle, it was discovered that the Ark had constructed a [[Installation 09|new replacement Halo]], which was launched by Professor [[Ellen Anders]] in an effort to deploy it to the [[Soell system]] and raise a [[distress beacon]] to the UNSC. However, the Halo was intercepted on the way to Soell by a [[Created]] [[Guardian]], while the forces of the ''Spirit of Fire'' and the Banished remained in conflict on Installation 00.<ref name="HW2">'''[[Halo Wars 2]]'''</ref>


This Transcript is taken from the third Terminal which is found in the game. It basically tells that 343 Guilty Spark is being warned for accessing Installation 00's systems and is warned that even though he is the Monitor of Installation 04 he has no right to be accessing systems on the Ark. He also learns that Installation 00 has the capability of making another Halo Installation and manages to stop the AI from sending Sentinels after him. Even though Guilty Spark found out that Installation 00 has the capability of making another Halo, he acted like he did not know this in the level [[The Ark (Level)|The Ark]] when the Installation 04 was being rebuilt.
During this time, the [[Flood]], who had survived aboard the ruins of [[High Charity]], were inadvertently released by [[Voridus]] and [[Pavium]] when they breached the [[containment shield]] around the structure with a Scarab and deactivated the Ark's Sentinel defense network in the process. The Flood began a second rampage on the Ark, forming a [[Proto-Gravemind]] that quickly began turning into a [[Gravemind]]. Voridus and Pavium managed to reactivate the Sentinel defense network and with the help of a [[Retriever Sentinel]], killed the Proto-Gravemind before it could finish its transformation into a Gravemind. With the Proto-Gravemind dead, the Banished and the Ark's Sentinels were able to contain the Flood once again and seal off High Charity.<ref name="Awakening the Nightmare">'''[[Halo Wars 2: Awakening the Nightmare]]'''</ref>
Terminal #1, datalog:  


'''<font color="#ff3333">Warning: Your intrusion has been logged.</font>
In [[2559#October|October 2559]], Banished forces [[Raid on Anodyne Spirit|raided]] the ''[[Anodyne Spirit]]'' for the shards of the [[Menachite Forerunner crystal]] recovered from [[Reach]] before Atriox managed to send a message to [[War Chief]] [[Escharum]] in the Milky Way ordering him to locate the [[Menachite portal complex|Portal Under the Mountain]] on Reach.<ref name="Sacrifice">''[[Sacrifice]]''</ref> Atriox's stated intention was to open a slipspace portal between the Ark and Reach in order to bring more Banished reinforcements to the Ark. At the same time, [[Blue Team]] visits Reach on [[Operation: WOLFE|a mission]] of their own and inadvertently lead the Banished and their allies the [[Keepers of the One Freedom]], [[Legion of the Corpse-Moon]] and the [[Clan of the Ravaged Tusks|Ravaged Tusks]] to the portal complex. Using one of the [[Ferret]]s, secretly undercover in the Keepers, as a [[Reclaimer]], the Keepers were able to open the portal which Atriox used the crystal shards to connect to the Ark. Atriox and several of his top officers flew through the slipspace portal to Reach in a [[Eklon'Dal Workshop Lich]], but Atriox chose to depart in Escharum's [[intrusion corvette]] in favor of a more important mission, leaving behind thousands of Banished forces to continue to hold the Ark in his absence rather than returning to the Ark with reinforcements.


'''<font color="#0000cc">04-343 (errant): Excuse me?</font>
After Atriox's arrival on Reach, his Lich was stolen by [[Castor]] and his detachment of the fanatical Keepers of the One Freedom who intended to use the Ark in order to fire the [[Halo Array]] and begin the Great Journey. Despite Atriox's warnings of the Banished still on the Ark to stop them, Castor's remaining Keepers nevertheless traveled to the Ark through the portal, accompanied by the Ferrets who remained undercover in their ranks. Shortly thereafter, the slipspace portal closed, preventing further travel to or from the Ark through it.{{Ref/Novel|Id=SoR|SoR}}


'''<font color="#ff3333">Your intrusion has been logged. And now it has been halted.</font>
Shortly after arriving on the Ark, the Castor and his forces allied themselves with the Covenant loyalists and set out to use [[Epsilon Clarion]] to fire the Halo Array. The allied forces were combated by both the Banished and forces from the ''Spirit of Fire'' who both sought to [[Battle of Epsilon Clarion|prevent them from succeeding]]. Both the Banished and the allied Keepers and loyalists suffered heavy casualties, but with the help of the Forerunner [[archeon-class ancilla]] [[Intrepid Eye]], the latter faction nearly succeeded. However, on [[Veta Lopis]]' signal, the ''Spirit of Fire'' launched an orbital bombardment against Epsilon Clarion with EMP rounds from its MAC gun. The bombardment destroyed both the facility and Intrepid Eye while Castor and [[Inslaan 'Gadogai]], now aware of the truth behind the Halo Array and the only survivors of the Keeper detachment, abandoned their pursuit of firing the rings and ended their alliance with the loyalists. With the entire Clarion network now either inoperable or inaccessible, the Ark was left without the ability to fire the Halo Array while the surviving Ferrets joined the crew of the ''Spirit of Fire'' and their continuing fight against the Banished for control of the Ark.{{Ref/Reuse|DW}}


'''<font color="#0000cc">04-343(errant): On whose authority?</font>
{{Clear}}


'''<font color="#ff3333">Advice: Any further attempt to access [insects under stone] will result in your immediate addition to local Sentinels' targeting ledger.</font>
==Design details==
[[File:HW2 Ark2.png|300px|thumb|The Ark's surface.]]
Installation 00 resembles a massive flattened dish with a series of eight curved arms, known as spires, four large and four small, arranged around its rim, similar to the petals of a flower. The entire upper surface is [[Terraforming|terraformed]], with oceans, forests and deserts.{{Ref/Reuse|The Ark}}{{Ref/Reuse|Covenant}} Installation 00 is {{Convert|127530|km|mi|sigfig=5}} in diameter and thus one of the largest known Forerunner constructs.{{Ref/Reuse|vis}} Spread throughout the installation are hundreds of [[refugia]], artificial biomes designed to sustain diverse flora and fauna as part of the Conservation Measure. Each of these refugia are separated by massive quarantine walls.<ref name="mythos ark">'''[[Halo Mythos]]''', ''pages 122-123''</ref> Twelve refugia are located on the central hub, while an additional twenty are located on the arms of the structure.<ref name="Refugia">'''[[Halo Wars 2]]''', ''[[Phoenix Logs]]'' - ''Refugia''</ref> The various refugia are intended to mimic common planetary environments - one such refugia known as the Halo Refugia<ref name="HaloRefugia">'''[[Halo Wars 2]]''', ''[[Phoenix Log]]'' - ''Halo Refugia''</ref> bore a notable similarity to Earth's climate, though much more extreme; mountains are higher, chasms are deeper and the sea and sky are a deeper blue.{{Ref/Reuse|HaloRefugia}}


'''<font color="#0000cc">04-343 (errant): Vexation! I am the Monitor of --</font>
At the center of the installation is the [[Foundry (location)|Foundry]], an enormous circular facility used to construct Halos. The core of the 10,000-kilometer-wide Foundry is a hollow space, home to a stripped remnant of a material-rich celestial body used to obtain the vast amounts of resources required for the construction of a Halo ring. When active, the Foundry generates so much heat that the Ark requires multiple cooling stations. At least two such systems span a snowy gorge; it is possible that the massive cooling systems caused this icy climate.<ref>'''[[Halo 3]]''', multiplayer level ''[[Narrows]]'': ''"Without cooling systems such as these, excess heat from the Ark's forges would render the construct uninhabitable."''</ref>


'''<font color="#ff3333">Judgment: Your authority means nothing here.</font>
Like the [[shield world]]s, Installation 00 possesses an [[Astroengineering#Stars|artificial sun]].{{Ref/Reuse|The Ark}}{{Ref/Reuse|Covenant}}{{Ref/Reuse|Halo}}


'''<font color="#0000cc">04-343 (errant): Impatience!</font>
Like the Halos, Installation 00 features multiple [[Cartographer]] facilities, map rooms that can pinpoint any location on the installation.{{Ref/Reuse|The Ark}}<ref name="The Cartographer">'''[[Halo Wars 2]]''', campaign level ''[[The Cartographer]]''</ref><ref name="Cartographer PL">'''[[Halo Wars 2]]''', ''[[Phoenix Logs]]'' - ''The Cartographer''</ref> Similarly to the Halos, the Ark features a control room from which the array could be activated. This facility, known as [[Installation 00 Citadel|the citadel]], is protected by a system of [[Barrier tower|energy shield barriers]] that encircle the center of the disk. These barriers are controlled by towers that circumscribe the center of the installation.{{Ref/Reuse|Covenant}}


'''<font color="#0000cc">04-343 (errant): I have told you who I am. Who are you?</font>
The Ark also possesses a vast network of power grids beneath its surface. These grids can be tapped into by structures on the surface known as [[Power Node]]s when extra locational power is needed in emergencies. These nodes were co-opted by UNSC and Banished forces in 2559, though Banished [[Power Extractor]]s were also able to tap into these power networks.<ref name="PowerNode">''[[Halo Wars 2]]'', ''[[Phoenix Logs]]'' - Power Node</ref><ref>'''[[Halo Wars 2]]''', ''[[Phoenix Logs]]'' - ''Power Extractor''</ref>


'''<font color="#ff3333">All our makers once held dear. [Alexandria before the Fire]</font>
The megastructure is also surrounded by numerous other secondary installations, which are used for various support functions. During the [[Second Ark Conflict]], these installations were occupied by the [[Banished]].{{Ref/YouTube|Id=stream|fYaxRoAf96s|Channel=Halo|VidName=Halo Lore Stream: The Halo Array|Time=4251|Quote=There's some stuff in the secondary materials for Halo Wars 2, regarding the fleet that actually went to the Ark with the Enduring Conviction. [...] some of those ships are out at other installations that are near the Ark. So there's the Ark, and there's facilities that are out near the Ark that we don't see - some of those ships are out there doing that. You could say it's a cost function of how many ships we could show in the cutscenes and stuff. Yeah, it [Enduring Conviction] wasn't the only ship that was there.
|Quotee=Kenneth Peters|Detail=1:10:51}}


'''<font color="#0000cc">04-343 (errant): Sincere apology. But how --</font>
===Defenses===
[[File:FOR-ArkAI-logo2.png|thumb|left|240px|The avatar icon of [[000 Tragic Solitude]].{{Ref/Reuse|Terminals}}]]
Similar to most Forerunner installations, the Ark had its own [[monitor]], [[000 Tragic Solitude]], charged with the facility's defenses. For the most part, Solitude reacted little when humanity and the Covenant arrived at the Ark, though when 343 Guilty Spark attempted to access the Ark's systems during the Battle of Installation 00, Tragic Solitude threatened to add the monitor to the facility's targeting ledger if he persisted.<ref>'''Halo 3''', ''Terminal 3''</ref> After the Ark was severely damaged by the destruction of Installation 08, the latest on a line of destroyed Forerunner relics, Solitude grew bitter and viewed all sentients in the galaxy as incapable of being peaceful.{{Ref/Reuse|Hunters}} The arrival of the Human-Covenant War to the installation additionally prompted the activation of [[Terminus]]', structures that are designed to perform tireless cataloging, recording of indexing of events in an attempt to prepare countermeasures and defenses for future possible scenarios. These records are cross-references with existing records of historical events and battles to perform simulations and predictions of potential outcomes - losing a terminus would result in a massive loss of operational capability for the installation.<ref name="Terminus">'''[[Halo Wars 2]]''', ''[[Phoenix Logs]]'' - ''Terminus''</ref>


'''<font color="#ff3333">Explanation: This facility is host to the [Librarians'] final --</font>
The Ark's small defenses were [[Aggressor Sentinel]]s created by numerous [[Sentinel manufacturing facility|Sentinel factories]] just like at the rings. The [[Retriever Sentinel]]s could also be used offensively, though they were not usually outfitted with weapons until Solitude began arming them. The Ark was also guarded by [[armigers]], humanoid defense droids that were capable of attacking with energy rifles and staves. Tragic Solitude could also take control of the Ark's wildlife and even people through manipulating their brain waves.{{Ref/Reuse|Hunters}}


'''<font color="#0000cc">04-343 (errant): The archive is intact?! Then our makers' plan --</font>
After the [[Battle of Installation 00]], Tragic Solitude had a [[containment shield]] erected around the ruins of the Covenant holy city of [[High Charity]] to contain any surviving [[Flood]] within. He also had the Ark's Sentinels raze the perimeter and modify the refugia so that no sentient life survives nearby to deprive the Flood of any host bodies in close proximity to their prison.<ref>'''[[Halo Wars 2]]''', ''[[Phoenix Logs]]'' - ''Idle Hands II''</ref>


'''<font color="#ff3333">But also maintains [bellows, crucible, castings]</font>
Another method of defense are [[particle cannon]]s upon the Ark's surface. After discovering the location of one through one of the Ark's Cartographers,{{Ref/Reuse|The Cartographer}} the smart AI [[Isabel]] had Professor [[Ellen Anders]] use it to attack the {{Class|CAS|assault carrier}} ''[[Enduring Conviction]]''. The cannon alone was not powerful enough to destroy the ship, but after thirty minutes of sustained fire could take down its shields and leave the ship vulnerable to other methods of attack.{{Ref/Reuse|Hold the Line}}<ref>'''[[Halo Wars 2]]''', ''[[Phoenix Logs]]'' - ''Enduring Conviction Battle Reports''</ref>


'''<font color="#0000cc">04-343 (errant): A what?</font>
The Ark also possesses a Sentinel defense network that coordinates Sentinels to assemble and attack anything deemed a threat to the Ark. [[Isabel]] utilized the network to destroy the ''Enduring Conviction'' by firing the assault carrier's [[energy projector]] at the Ark, alerting the Sentinels in the area.<ref name="Under the Dark">'''[[Halo Wars 2]]''', campaign level ''[[Under The Dark]]''</ref> Prior to the launch of [[Installation 09]], the security protocols was heightened to finalize the preparation for the launch to its original site and as the part of protocol, the Sentinels release [[Retriever Sentinel]] to cleanse the Installation from the threat, including the UNSC and the Banished.<ref>'''[[Halo Wars 2]]''', campaign level ''[[The Halo]]''</ref> During [[Operation: SPEARBREAKER|an operation]] led by Major Vaughan, a Controller Sentinel attacked anyone it deemed a threat, even the UNSC, due to constant abuse of the teleportation network before the ''Spirit of Fire''{{'}}s arrival.<ref>''[[Halo Wars 2: Operation: SPEARBREAKER]]''</ref> [[Voridus]] managed to shut down the Sentinel defense network around [[High Charity]]'s crash site, but at the price of the [[Flood]] being released from the ruined city after he breached the [[containment shield]] with a [[Barukaza Workshop Scarab]]. When the network was reactivated, the Sentinels resumed their duties and aided the Banished in defeating the Flood, enabling them to enact the containment protocol once again.{{Ref/Reuse|Awakening the Nightmare}}


'''<font color="#ff3333">[bellows, crucible] --</font>
===Slipspace portals===
A major aspect of Installation 00 was its ability to send and receive objects via [[slipspace portal]]s. Late in the [[Forerunner-Flood war]], the rebuilt Halo array was dispersed throughout the galaxy through the use of these portals.<ref>'''Halo Legends''': ''Origins''</ref>


'''<font color="#0000cc">04-343 (errant): A Foundry?</font>
In order to ensure the safety of [[human]]ity, the [[Librarian]] established a [[Portal at Voi|portal-generating structure]] near Mount Kilimanjaro on the human homeworld of Erde-Tyrene.<ref>'''[[Halo: Silentium]]'''</ref> During the [[Human-Covenant War]] on November 17, 2552, the Covenant forces under the command of the Prophet of Truth utilized this portal, sparking the [[Battle of Installation 00]]. The portal was damaged by the firing of [[Installation 08]] and shut down while the {{UNSCShip|Forward Unto Dawn}} was still in transit.{{Ref/Reuse|The Ark}}{{Ref/Reuse|Floodgate}} The portal was eventually repaired and used again in 2555 by Tragic Solitude, though he could not activate its doorway to Earth from the Ark's end due to the firing of Installation 08 severing his control over it. Tragic Solitude managed to increase the power to the portal exponentially, causing travel between Earth and the Ark to be almost instant.{{Ref/Reuse|Hunters}} After the start of the [[Created conflict]], the Ark's failsafe measures closed it again to keep the Ark out of [[Cortana]]'s hands.{{Ref/Reuse|Mythos202}} Professor [[Ellen Anders]] was unable to figure out how to reactivate it from the Ark, necessitating the launch of [[Installation 09]] in an effort to make contact with the UNSC.<ref name="Hold the Line">'''[[Halo Wars 2]]''', campaign level ''[[Hold the Line]]''</ref> Following the departure of Anders and the Halo ring, Captain [[James Cutter]] felt that the portal should remain closed until the ''Spirit of Fire'' could fully evaluate the Banished threat to it. Cutter ordered [[Isabel]] to start investigating the portal's controls in case they needed to open or close it again.<ref>'''[[Halo Wars 2]]''' - ''[[Phoenix Logs]]'' - ''Beyond the Edge''</ref>


'''<font color="#0000cc">04-343 (errant): For what purpose?!</font>
An unknown entity at the Ark generated a portal to transport the {{UNSCShip|Spirit of Fire}}, which had drifted in interstellar space for 28 years, to the installation in 2559.<ref name="The Signal">'''[[Halo Wars 2]]''', campaign level ''[[The Signal]]''</ref>


'''<font color="#ff3333">Warning: Your intrusion has been logged.</font>
After hijacking the {{UNSCShip|Rubicon}}, [[343 Guilty Spark]] used one of the Ark's remaining active portals to return the ship to the galaxy in an effort to find the [[Librarian]]. However, after its return to the Milky Way, the ''Rubicon'' crashed on [[Geranos-a]].<ref>'''[[Halo: Renegades]]'''</ref>


'''<font color="#ff3333">Advise: Any further attempt to access will result --</font>
There is [[Menachite portal complex|another slipspace portal]] on [[Reach]] similar to the [[Portal at Voi]] that the [[Keepers of the One Freedom]] and some of the Banished were able to access in [[2559#October|October 2559]] when combined with Atriox using the shards of the [[Menachite Forerunner crystal]] on the Ark's end.{{Ref/Reuse|Sacrifice}} However, this portal only remained open as long as the local charge remained rather than remaining continuously open like the Portal at Voi. It closed within a fairly short period of time, but remained open long enough for a [[Eklon'Dal Workshop Lich]] to make a two-way trip through the slipspace portal, making it to Reach and the Ark respectively.{{Ref/Novel|Id=Chapter 21|HSoR|Chapter=21}}{{Ref/Novel|Id=Epilogue|HSoR|Chapter=Epilogue}}


'''<font color="#0000cc">04-343 (errant): Indignant!</font>
==Trivia==
 
===Production notes===
'''<font color="#ff3333">-- immediate addition to local sentinels' targeting ledger.</font>'''
{{Other languages
|fr={{Tooltip|''L'Arche''|The Ark}} and {{Tooltip|''Installation 00''|(Same as English)}} in almost every media.<br>
{{Tooltip|''La petite Arche''|The little Ark}} in ''Halo: Silentium''.
|es={{Tooltip|''El Arca''|The Ark}} and {{Tooltip|''Instalación 00''|Installation 00}} in almost every media.<br>
|de={{Tooltip|''Die Arche''|The Ark}} and {{Tooltip|''Installation 00''|(Same as English)}}
}}
{{Linkbox|gallery=yes}}
*The Ark was known as "Waypoint" during the production of ''Halo 3''.<ref>[http://www.isaachannaford.com/2011/01/rapid-environment-work-2-6-hours-piece.html '''Isaac Hannaford''': ''rapid environment work 2-6 hours a piece'']</ref><ref>[http://carnage.bungie.org/haloforum/halo.forum.pl?read=1047186 '''halo.bungie.org''': ''Re: Halo Concept Art'']</ref> This name was later rendered canonical by the Halo Waypoint forum administrator {{Plain|[https://forums.halowaypoint.com/yaf_profile601146.aspx Catalog]}} (posing as the Forerunner entity of [[Catalog|the same name]]).{{Ref/Reuse|CatalogWaypoint}}
*In early conceptual stages, artist [[Paul Russel]] did not want to make the Ark significantly larger than a Halo ring. One of his early concepts of the Ark design incorporated a cradle for a Halo installation in the center, with four sleek arms on one side of the ring, along with several beams leading to a central hub structure situated on the other side.<ref>[https://picasaweb.google.com/114253662089061571624/Halo3TheLostCity#5573889897215738578 '''Picasa''': ''Paul Russel > Halo 3: The Lost City 16/16'']</ref>
*In ''Origins'', the Ark and the Halos are depicted without land on their surfaces during the activation of the Halo Array. This is likely due to [[Cortana]]'s interpretation, or an instance of artistic license, as both ''Halo: Silentium'' and the terminals in ''Halo: Combat Evolved Anniversary'' show that the Ark and the Halos had fully terraformed surfaces prior to the activation of the Array.
*The Ark as a concept has existed since the development of ''Halo: Combat Evolved''.<ref>[[:File:HCE Ark Concept.jpg|Halo: Combat Evolved concept art]]</ref><ref>[https://twitter.com/game_fabricator/status/1088274744456159232 Marcus Lehto on Twitter].</ref> Bungie artist [[Marcus Lehto]] produced several sketches of structures for the Ark concept, that would later go on to be refined and considered during the development of ''Halo 2''.<ref>[[:File:H2 Ark Concept.jpg|Halo: 2 concept art]]</ref> These concept images both depict the Ark as a structure within the ground, a concept later instead used for the design of the [[Portal at Voi]] in ''Halo 3''.
*One of the early concepts for the Ark produced in ''Halo 3'', depicting a Forerunner circular structure encasing a regular planet, was later reused in ''[[Halo: Escalation Issue 23]]'' for the design of an as-yet unnamed Forerunner installation.


(terminal gets overridden)
===References===
*The history and name of the Ark are a [[List of references to religion in Halo|reference]] to the Biblical story of Noah, who was instructed by God to build an Ark to save specimens of every animal on Earth from a great flood. The name may also be a reference to [[Wikipedia:Ark of the Covenant|Ark of the Covenant]], which, according to the Jewish Torah and the Biblical Old Testament, contains the stone tablets of the ten commandments. It is the holiest object of the Jewish faith.
*The Ark has some similarity to the concept of an [[wikipedia:Alderson disk|Alderson disk]]. However, an Alderson disk is much larger and has a star in the center.


A lot of commands show up, including this somewhat creepy message said by [[Mendicant Bias]]:
==Gallery==
===Concept art===
<gallery>
File:H3_Ark_Planetoid_Concept.jpg|Early concept art depicting a planetoidal Ark.
File:HE-23-ArtiPlanet.png|The prior concept, reused for the design of a structure in ''Halo: Escalation''.
File:H3_Ark_Concept_1.jpg|Early concept art of Waypoint, former name of the Ark.
File:H3_Ark_Concept_2.jpg|More concept art for Waypoint. The structure in this version of the concept was designed to not have many elements bigger than the Halo it was constructing.
File:H3 Ark Dynamic Concept.jpg|Concept art of the Ark from the surface.
File:H3 Ark Dynamic Night Concept.jpg|View of this version at night.
File:H3_Ark_Desert_Concept.jpg|Concept art of a desert on the installation.
File:H3_Ark_Structure_Concept.jpg|Concept art of a structure on the installation.
File:H3 Concept ArkSpokedStructure.jpg|Concept art of a large structure on the installation.
File:H3 Ark Warthog Concept.jpg|Concept art of Warthogs on their way to a Forerunner building after Installation 08's reveal in ''[[Halo 3]]''.
File:H3 - Ark and 04B.jpg|Concept art depicting the Ark and Installation 08 in ''Halo 3''.
File:HW2 Installation00 Environment Concept 1.jpg|Concept art of the installation, for ''Halo Wars 2''.
File:HW2 Installation00 Environment Concept 2.jpg|Concept art of the installation, for ''Halo Wars 2''.
File:HW2 Installation00 Environment Concept 3.jpg|Concept art of the installation, for ''Halo Wars 2''.
File:HW2 Installation00 Environment Concept 4.jpg|Concept art of the installation, for ''Halo Wars 2''.
File:HW2 Installation00 Environment Concept 5.jpg|Concept art of the installation, for ''Halo Wars 2''.
File:HW2 Installation00 Environment Concept 6.jpg|Concept art of the installation, for ''Halo Wars 2''.
File:HW2 Installation00 Environment Concept 7.jpg|Concept art of the installation, for ''Halo Wars 2''.
File:HW2 Installation00 Environment Concept 8.jpg|Concept art of the installation, for ''Halo Wars 2''.
File:HW2 Installation00 Environment Concept 9.jpg|Concept art of the installation, for ''Halo Wars 2''.
File:HW2 Installation00 Environment Concept 10.jpg|Concept art of the installation, for ''Halo Wars 2''.
File:HW2 Installation00 Environment Concept 11.jpg|Concept art of the installation, for ''Halo Wars 2''.
File:HW2 Installation00 Environment Concept 12.jpg|Concept art of the installation, for ''Halo Wars 2''.
File:HW2 Installation00 Environment Concept 13.jpg|Concept art of the installation, for ''Halo Wars 2''.
File:HW2 Installation00 Environment Concept 14.jpg|Concept art of the installation, for ''Halo Wars 2''.
File:HW2 Installation00 Environment Concept 15.jpg|Concept art of the installation, for ''Halo Wars 2''.
File:HW2 Installation00 Environment Concept 16.jpg|Concept art of the installation, for ''Halo Wars 2''.
File:HW2 Installation00 Environment Concept 17.jpg|Concept art of the installation, for ''Halo Wars 2''.
File:HW2 Installation00 Environment Concept 18.jpg|Concept art of the installation, for ''Halo Wars 2''.
</gallery>


I. SEE. YOU. RECLAIMER.
===Screenshots and renders===
<gallery>
File:H3_Installation00_Full.jpg|The Ark in ''Halo 3''.
File:ARK2.jpg|The size of the Ark compared to that of Earth and a Halo installation.
File:Arklandscape.JPG|The desert near the Ark's Cartographer facility.
File:Ark.JPG|A [[Holography|holographic]] representation of the Ark.
File:Sheltered Valley.jpg|A small mountain clearing near the Citadel.
File:Narrows01.jpg|A view of one of Installation 00's cooling systems.
File:H3 Ark Sky.png|The Ark as seen from Installation 08.
File:Ark_light_source.jpg|The Ark's artificial sun.
File:Ark_4.jpg|A view of most of Installation 00's surface.
File:TerminalArkArray.jpg|The Ark along with the Halo installations prior to their activation.
File:HOSFM Installation 00 forerunner symbol.png|The [[Forerunner symbols|symbol]] representing Installation 00.
File:HW2 CoverArt Scarab.jpg|Banished and ''Spirit of Fire'' forces clash on the Ark.
File:HM - SOF and Ark.jpg|Installation 00 in ''[[Halo Mythos]]''.
File:HW2B-Arkholo.gif|A hologram of the Ark in ''[[Halo Wars 2]]''.
</gallery>


== Trivia ==
==List of appearances==
*Within the [[Halo Graphic Novel]], in the short comic ''Second Sunrise Over New Mombasa'', a transmission is intercepted between the Covenant assault forces stating that once the humans were dealt with in the [[First Battle of Earth]], they would start uncovering the Ark. There is also, of course, the strongly supported theory that human life originated in East [[Africa]], usually said as the Great Rift Valley. [[New Mombasa]] is in this area, so is the Ark Portal.
{{col-begin}}
*In the fifth server of the ''Iris'' VMC it was stated that the Ark was built to protect humanity from the [[Flood]] and the activation of the Halos.
{{col-2}}
*In the real world, [[wikipedia:Ark of the Covenant|Ark of the Covenant]] which according to the old Testament contains the stone tablets of the ten commandments, is the holiest object of the Jewish faith. The Ark of the Covenant is popularly believed to lie somewhere in East Africa, albeit in Ethiopia rather than [[Kenya]].
*''[[Halo: First Strike]]''
[[Image:6957944-Full.jpg|thumb|right|The "core" of the Ark.]]  
**''[[Petra]]'' {{Mo}}
*The "Ark" seen in the announcement trailer is structurally identical to the Forerunner sanctuary described in the final chapters of [[Ghosts of Onyx]] (albeit on a much grander scale), complete with fourteen metal fins and a brilliant, blue-white portal in the ground. However, it is shown without the thirteen concentric rings rising around the portal, which means that it was either built without them or they will rise as the structure opens.
*''[[Halo 2]]'' {{Fm}}
*During the level ''The Ark'', 343 Guilty Spark mentions that the Ark is 2<sup>18</sup> (262,144) light years away from the galactic center. As the [[Milky Way]] is around 100,000-120,000 light years in diameter, the installation is beyond the reaches of galactic space, thereby keeping anyone who is on it safe from the firing of the Halos.
*''[[Halo Graphic Novel]]''
*The "core" of the Ark, as it was called by 343 Guilty Spark, is a planetoid that serves as the Foundry mentioned in the aforementioned conversation between 343 Guilty Spark and the Ark's embedded AI. Investigation from afar reveals that the surface of the core has been strip mined away showing a glowing center beneath the crust. The planetoid was mined in order to provide raw materials for the creation of new Halo Installations. Thunderstorms can be seen from time to time raging across the planet's surface.
**''[[Second Sunrise Over New Mombasa]]'' {{Mo}}
*A member of [http://nikon.bungie.org/ HBO] estimated the size of the Ark by comparing its size to a Halo installation and Earth and estimated its size to be approximately 90,000 to 100,000 kilometers in diameter. See link [http://carnage.bungie.org/haloforum/halo.forum.pl?read=871617 here].
*''[[Iris]]'' {{Mo}}
*At one point in the level [[The Ark (Level)|The Ark]], 343 Guilty Spark mentions that he assumed that the Ark was a "shield installation" but he concluded that he must have been mistaken. This could have been a reference to the [[Shield World]].
*''[[Halo 3]]'' {{1st}}
*The Ark may have further Biblical connections such as Noah's Ark because he uses the Ark to escape the [[Flood]], taking examples of each species with him to save them, as the Forerunners did.
*''[[Halo: Legends]]''
*After the Dreadnought reaches the Ark, Mendicant Bias transfers into the Ark, explaining why he can "see" [[Master Chief]] through the Terminals in gameplay.
**''[[Origins]]''
*It is possible that the Ark is not destroyed just heavily damaged, as [[High Charity]] was destroyed on its surface and there are no traces of severe damage to the surface, as the Pillar of Autumn destroyed an entire installation. This is probably due to the Arks immense size, but it is unknown if the Ark is damaged enough to stop being functional.
**''[[Homecoming]]''
*In the Art of Halo 3, it showed a picture of a giant firestorm sweeping across the entire Ark as the replacement Halo fired, thus doing "a number on the Ark". Though this outcome is unconfirmed as the Ark's final fate was not seen in Halo 3.
*''[[Halo: Cryptum]]''
*The [[multiplayer]] [[maps]], ''[[Construct]]'', ''[[Isolation]]'', ''[[Narrows]]'' and ''[[Valhalla]]'' are located on the Ark.
*''[[Halo: Combat Evolved Anniversary]]''
*The entirety of the Ark is never seen in game; only petals or the center of the Installation are seen.  This contrasts the Halo Installations, which were usually given full-bodied debuts for their entrances.
**''[[Terminal (Halo: Combat Evolved Anniversary)|Terminals]]''
*''[[Halo: Primordium]]''
*''[[Halo: The Thursday War]]'' {{Mo}}
*''[[Halo 4]]'' {{Mo}}
**''[[Terminal (Halo 4)|Terminals]]''
*''[[Halo: Silentium]]''
*''[[Rebirth]]''
{{col-2}}
*''[[Halo: Broken Circle]]'' {{Mo}}
*''[[Halo 2: Anniversary]]'' {{Mo}}
**''[[Terminal (Halo 2: Anniversary)|Terminals]]'' {{C|Hologram only}}
*''[[Halo: New Blood]]'' {{Mo}}
*''[[Halo: Spartan Strike]]'' {{Mo}}
*''[[Halo: Hunters in the Dark]]''
*''[[Halo 5: Guardians]]'' {{Mo}}
**''[[Halo 5: Guardians Limited Edition dossiers|Limited Edition dossiers]]'' {{Mo}}
*''[[Know Your Enemy]]''
*''[[Halo Mythos]]''
*''[[Halo: Fractures]]''
**''[[Promises to Keep]]''
*''[[Halo: Tales from Slipspace]]''
**''[[Dominion Splinter]]'' {{C|Flashback only}}
*''[[Halo Wars 2]]''
*''[[Halo: Envoy]]'' {{Mo}}
*''[[Halo: Official Spartan Field Manual]]''
*''[[Halo: Renegades]]'' {{Mo}}
*''[[Halo: Shadows of Reach]]'' {{Mo}}
**''[[Sacrifice]]''
*''[[Halo: Point of Light]]'' {{Mo}}
*''[[Halo: Divine Wind]]''
*''[[Halo Infinite]]'' {{Mo}}
*''[[Halo: Outcasts]]'' {{Mo}}
*''[[Halo: Epitaph]]'' {{Mo}}
*''[[Halo: Anvil Accord]]'' {{Mo}}
{{col-end}}


== Links ==
==Notes==
*[http://halosm.bungie.org/story/ark.html Halo.Bungie.Org's Ark forum].
{{Ref/Notes}}
*[[wikipedia:Alderson Disk|Alderson Disk]], what the Ark is theorized to be.


==Sources==
==Sources==
<references/>
{{Ref/Sources|2}}
{{Forerunner|array|category=no}}


{{Forerunner2}}
[[Category:Installation 00 locations| ]]
[[Category:The Forerunner]]
[[Category:Halo Array]]
[[Category:Halos]]
[[Category:Technology]]

Latest revision as of 12:32, July 22, 2024

For the campaign level, see The Ark (level).
Installation 00
TheArkHW2.png
General overview

Description:

Disk with a hollow core and eight curved arms

Location:

Intergalactic space, over the galactic plane, 262,144 light years from galactic center

Operation overview

Type:

Ark installation

Function:

Conservation installation, Lifeworker research station, Halo construction foundry and remote activation facility

Attached AI(s):

000 Tragic Solitude (destroyed)

Date of construction:

c. 98,445 BCE-97,445 BCE[Note 1]

Heavily damaged:

December 11, 2552[1][2][3][4] (Fully repaired by March 2559)[5]

Structural information

Diameter:

127,530 kilometres (79,243 mi)[4]

Day length:

35.3 hours (adjustable)[6]

Gravity:

1G[4]

Surface temperature:

-30°C to 50°C (-22°F to 122F°)[4]

Atmospheric composition:

1.0 (N2, O2, Ar)[4]

 

Miranda Keyes: "Where would someone go to activate the other rings?"
343 Guilty Spark: "...Why, the Ark, of course."
— 343 Guilty Spark to Commander Miranda Keyes.[7]

Installation 00, also known as the Ark, the neoteric Ark,[8][9] the Great Foundry by the Covenant,[10] Oth Liqattu by the Banished,[11] and sometimes translated as Waypoint,[12] is a Forerunner installation from which the entirety of the Halo Array can be activated.[7] Installation 00 also functions as a potential safe haven from the Halo Array's strategic pulse, and as a facility to construct replacement Halos if necessary. The Ark is situated outside the galaxy, about 218 (262,144) light years from the galactic center.[13] Although later universally known as "the Ark", Installation 00 was originally one of two installations identified as Arks, the other being the older greater Ark. Due to this, Installation 00 was also referred to as the lesser Ark to differentiate it from the much larger greater Ark, whose foundry produced the original array of rings 30,000 kilometers in diameter, as opposed to the 10,000 kilometer-wide foundry of Installation 00.[14]

Overview[edit]

Halo Wars 2 concept artwork (cropped)
The Ark.

The Ark was designed with a number of functions, one of which is to remotely activate the Halo rings from outside the array's blast radius. Installation 00 can be placed on standby mode via a fail-safe system that is activated by an aborted firing such as the one that occurred at the end of the Battle of Installation 05. In addition to serving as the firing control center for the Halo array, Installation 00 functioned as an automated factory to construct Halo installations, thereby ensuring that the Halo Array was always ready to fire.[15][16] While originally designed solely as a construction and control center for the Halos, due to the Librarian's influence, the Ark was given a secondary function as a safe haven for life in the galaxy in the case of a galaxy-wide activation of the Halos; this is also the source of the name "the Ark".[17] Knowing that the Array would defeat the Flood through sterilizing the galaxy of any neurologically complex life, the Forerunners planned to preserve all life by storing it on the Arks and other preservation facilities. According to this plan, known as the Conservation Measure, the Librarian was to index every sentient species in the ecumene and bring specimens of each to the Ark. These sentient species would be stored on the Ark and would later be reseeded on their original homeworlds after the Halo Array had been activated.[18]

Topography[edit]

A surface view of Installation 00's arms. The installation's artificial star can be seen in the sky.

Ecology[edit]

The Ark has a habitable surface on each of its spokes and on the majority of the inner circle, apart from the foundry. This terrain was intended to support cataloged life forms prior to being reseeded throughout the galaxy.[19] These landscapes and biomes are as diverse as those of Earth and of the Halos, including deserts,[13] taiga,[15] and deciduous forests.[20] Several bodies of water occur across the installation. As such, the Ark can sustain its own ecosystem, providing a variety of habitation for many kinds of life.

Like most Forerunner constructs, the Ark's atmosphere is similar to that of Earth, being mostly comprised of oxygen and nitrogen. This means that all known sentient species, with the exception of the Unggoy, can survive on the surface without any form of protection. As with the Halos, Installation 00 features a widely varying range of climates.

The activation of Installation 08 inflicted substantial damage to the Ark. While some life support units remain intermittently active, they were in severe disrepair. Combined with the artificial sun's weakened output, weather conditions on the surface have became highly volatile. Most indigenous fauna have perished, either from the Halo pulse itself or the extreme weather that came afterwards.[21] However, some wildlife survived and were seen during Operation: FAR STORM.[22] After the destruction of 000 Tragic Solitude, Luther Mann stated a belief that it was in fact the rogue Monitor who was behind the weather conditions as part of his plan for revenge. Once Tragic Solitude was destroyed, the weather returned to temperate conditions.[23]

While under repair by Retriever Sentinels, there would be a new shift in the Ark's surroundings as the Sentinels repaired and rebuilt the Ark. Dense forests sprang up from pit-black, barren terrain over the course of a week and a particularly virulent strain of weed was checked by the reintroduction of voracious, insectoid parasites before it could strangle the budding plants nearby.[24] The Ark showed itself to be remarkably adaptable to change, with giant tectonic plates rearranging, shifting and unfolding to form a new pathway across a chasm.[25] Having begun in 2557, the process was completed by the arrival of the Spirit of Fire in 2559, leaving the Ark fully repaired and habitable again, though wreckage from the Battle of Installation 00 persisted across the Ark's surface.[5]

Locations[edit]

Astronomy[edit]

History[edit]

Forerunner-Flood war[edit]

Installation 00 sending the Halo Array through a slipspace portal during the Forerunner-Flood war.

"Every vessel we can fill, we send to the Ark. I dare not cease the mission. Not now, not until I've done all I can. Each one of these souls is finite and precious. And I'm close. Close to saving them all."
— A message from the Librarian to the IsoDidact.[26]

Like the rest of the newer, more efficient Halo installations, Installation 00 was constructed sometime between 98,445 BCE and 97,445 BCE under orders of Master Builder Faber, to address problems with the greater Ark and its larger Halos. While plans for the second Ark had existed for some time, its construction was delayed by the Old Council to avoid the Builders from gaining too much power.[27] The lesser Ark, as it was known at the time, was designed to produce smaller but much more powerful Halo rings, which could be transported more efficiently and could deal far more widespread damage. Until the very last days of the Forerunner-Flood war, the lesser Ark, its new Halos, and its location were kept a well-guarded secret; only the most top-tier Forerunners knew of its existence, and the only one who knew the exact coordinates of the installation was Faber. Whereas the greater Ark acted as the Forerunners' final line of defense and command center, the lesser Ark would serve the function of a last fallback point where its own array of rings could be swiftly distributed to their designated locations across the galaxy and fired to cleanse the galaxy of all sentient life as a last resort.[28]

The IsoDidact fires the Halo Array from the Installation 00 Citadel.
The IsoDidact activates the Halo Array from Installation 00's citadel.

In the endgame of the Forerunners' war with the Flood, the Forerunner Contender-class artificial intelligence Mendicant Bias, which had been corrupted by the Gravemind and defected to the Flood, attacked and destroyed the greater Ark, killing the majority of the remaining Forerunners who had taken refuge there. Using coordinates provided by the Master Builder, a handful of survivors, including the IsoDidact, managed to escape to the lesser Ark where they prepared their weapons of last resort. In order to buy the IsoDidact time, the Librarian traveled to Earth, broadcasting a feint transmission intended to draw the Flood's attention to her. She spent her last days in the plains near Mount Kilimanjaro, near the site of the slipspace portal to Installation 00. Mendicant Bias knew of the secret Ark and how to access it through the Keyships, though he did not know of its exact location. In order to devise the best possible defense against Mendicant Bias, the Forerunners deployed Offensive Bias, a military AI formerly in control of the greater Ark and Mendicant's replacement, and sent it to counter Mendicant Bias' fleet in advance before it could reach the Ark. While Offensive Bias engaged Mendicant's fleet, the IsoDidact completed preparations for the Halo Array and fired the rings from the Ark, purging the galaxy of all life.

Following the Array's firing, Offensive Bias defeated Mendicant Bias within minutes. Offensive decided to spare the last portion of its opponent and delivered it to Installation 00 for study. There, the remaining Forerunners, led by the IsoDidact, held a trial for the AI for betraying the ecumene. The Didact decided to keep Mendicant alive as it had intimate knowledge of the Flood and could be called upon in case of their return. Bias was entombed in the installation with only one thought allowed to him: atonement.[29]

Battle of Installation 00[edit]

The Fleet of Retribution and Truth's fleet meet above the Ark.
Main article: Battle of Installation 00

Following the Prophet of Regret's botched invasion of Earth on October 20, 2552, the Prophet of Truth dispatched a Jiralhanae-led support fleet to pick up what is left of the Regret's forces at Kenya and to uncover what he believed to be the Ark.[30] By November 17, the Covenant had uncovered the structure they had spent the last month unearthing. Truth, through his Forerunner Dreadnought, activated the device, which was actually just a portal-generating structure which led to Installation 00.[31]

Truth led his fleet through the portal; after defeating a Flood invasion of the town of Voi, a joint United Nations Space Command - Sangheili strike force followed the Prophet's forces.[32] Upon their arrival on December 11,[1] the latter force were attacked by the Covenant, which held a 3:1 numerical advantage.[13] Despite this, the Sangheili Fleet of Retribution and the UNSC Battle Group Victory crushed Truth's forces.[13]

After engaging the Covenant across the installation, Spartan John-117 and Arbiter Thel 'Vadam entered the citadel, where they found Truth, who had become infected by the Flood and deactivated the array. Soon after 'Vadam killed the Prophet, effectively destroying the Covenant and ending the war, he, the Master Chief, and 343 Guilty Spark, the former monitor of Installation 04, discovered that a replacement Installation 04 was being constructed by the Ark's Foundry.[15] The Spartan and the Arbiter soon rescued the AI Cortana, who held Installation 04's Activation Index, from the Flood-infested Covenant capital city, High Charity.[33] They, with Sergeant Major Avery Johnson, assaulted the Halo's Control Room to activate the ring, destroying both the Flood and the remaining Covenant forces. They succeeded, though Johnson was killed by the monitor. While Guilty Spark refused to allow his new Halo to be destroyed, he also implied that he was protecting the Ark. The partially constructed installation's activation tore the ring apart and severely damaged the Ark.[2][3][16]

Post-battle[edit]

Halo Legends screenshot
Installation 08 fires over the Ark, severely damaging it.

In March 2553, the Office of Naval Intelligence deployed an automated probe-carrying spacecraft to the damaged Ark using advanced slipspace technology. The ship arrived in November and dispersed its probes, although all communications with the devices were cut off after initial transmissions confirming the Ark's survival. In response, the UNSC Rubicon was sent from Luna in December 2553 to conduct a more thorough investigation of the installation's ravaged surface.[34] Due to the damage dealt to the Ark's life support systems and its artificial sun, heavily inclement weather became the norm.[21]

The UNSC Rubicon carried several remote contact teams, who landed on the damaged Ark and attempted to find the source of the mysterious signal. After about eight days, contact with all teams was lost; only one team, RCT-06, returned, having sustained heavy casualties and carrying with them a device of unknown nature. The armature's origin was subjected to debate, but it was believed by the team to be the source of the beacon picked up by the initial investigative group.[21] The device, actually a broken, barely active monitor, began to relate its past life as a human: Chakas. Though the ship's ONI attaché initially doubted the veracity of the monitor's account, the science team leader pointed out that it was consistent with the "Bornstellar Relation" found on Onyx.

000 Tragic Solitude observes the heavily damaged Ark.

Eventually, the monitor revealed that it was none other than 343 Guilty Spark himself. Claiming that he knew the location of the Librarian, whom he believed to be alive, Spark subsumed the ship's AI, knocked out the crew via the life support systems, and hijacked the ship.[35] Communications with the Rubicon halted within 48 hours of its last report. Search and rescue teams were then deployed to the site, but reported no findings.[21]

The last of its ground team, Bobby Kodiak, was left stranded when the Rubicon left, and mortally wounded by attacking chaefka. It was then that he was contacted by the Ark's monitor, 000 Tragic Solitude, who had survived the Ark's devastation and sought to repair the station and get revenge. Offering him a chance to live, Tragic Solitude rescued Kodiak and mended his body with cybernetics, turning him into a cyborg and putting him under the monitor's control. For the following two years, Tragic Solitude partially repaired the Ark and prepared for an attack on the galaxy. Tragic Solitude was able to repair the Ark end of the Portal at Voi and increase its power so that the portal would transport objects near-instantaneously between Earth and the Ark, but he could not activate the portal as the firing of Installation 08 had severed the monitor's control over it.[22]

Operation: FAR STORM[edit]

N'tho 'Sraom and Frank Kodiak engage morolaath during Operation: FAR STORM.
Main article: Operation: FAR STORM

In 2555, the Ark was partially restored and Tragic Solitude enacted its plan. Using Kodiak to activate the process, Tragic Solitude initiated a countdown to the rings' firing in several weeks. This was so that someone within the Milky Way galaxy would open a portal to the Ark in an attempt to stop the countdown, allowing the monitor to dispatch its Retriever Sentinels to kill all sentient species and mine their planets to repair the Ark. The countdown was discovered on the intact Halo rings soon after and a human-Sangheili joint task force departed to the Ark through the Portal at Voi. The expedition's ship was intercepted and brought down above the Ark by Tragic Solitude's Retrievers, but the crew survived and managed to reach the Array's control center and stop the countdown. However, the portal was still open and Tragic Solitude deployed a fleet of Retrievers to Earth in an attempt to mine the Sol system's worlds, causing heavy damage to the region surrounding the portal as well as the UNSC Home Fleet. However, the UNSC-Sangheili crew managed to thwart the monitor's plan and the Retrievers were recalled, with the monitor ending up destroyed. UNSC reinforcements were deployed through the portal to the Ark soon after and rescued the expeditionary crew. With Solitude destroyed and the Retrievers now dormant, the UNSC began to establish research facilities on the Ark and study the Sentinels in hopes that they could be commanded to continue repairing the installation by strip-mining lifeless systems so that no one would be harmed in the process.[22]

Repairing the Ark and research[edit]

In 2557, a human research team traveled to the Ark aboard Eden Rising to establish a permanent base on the Ark, the Henry Lamb Research Outpost. The scientists reactivated the dormant Retriever Sentinels which were dispatched to lifeless systems to strip-mine them for the needed resources and under the guidance of the Smart AI Isabel, began nudging along repair efforts.[36] However, over time, the process became fully automated and the scientists could simply sit back and watch the wonder of a world being reborn.[37] Within three months of the establishment of the Henry Lamb Research Outpost, there would be a new shift in the outpost's surroundings as the Sentinels repaired and rebuilt the Ark. Dense forests sprang up from pit-black, barren terrain over the course of a week and archeologist Nathaniel Palmer monitored a particularly virulent strain of weed that was checked by the reintroduction of voracious, insectoid parasites before it could strangle the budding plants nearby.[24] The Ark showed itself to be remarkably adaptable to change, with Palmer witnessing as giant tectonic plates rearranged, shifted and unfolded to form a new pathway across a chasm.[25]

New arrivals[edit]

Captain James Cutter and Dr. Ellen Anders survey the Ark from high above it.
Main article: Second Ark Conflict

"And now the Ark's defenses stir, sensing the shadow of a threat that moves in spaces Her eyes cannot see, intent on seizing the great factory of the Forerunners."
— Curator on the Created and the Banished.[38]

Following the Created takeover of human space on October 28, 2558 the Ark's failsafe measures prevented Cortana and her allies from being able to access the installation.[38] A month later, the Banished, led by the Jiralhanae warlord, Atriox, laid siege on the UNSC bases on Installation 00, among them the Henry Lamb Research Outpost.[39] Shortly after the Banished's attack, the UNSC Spirit of Fire, drifting in space for 28 years, was abruptly transported to the Ark by a mysterious entity. Those on board the Spirit of Fire came into conflict with the forces of the Banished on the surface soon after. During the battle, it was discovered that the Ark had constructed a new replacement Halo, which was launched by Professor Ellen Anders in an effort to deploy it to the Soell system and raise a distress beacon to the UNSC. However, the Halo was intercepted on the way to Soell by a Created Guardian, while the forces of the Spirit of Fire and the Banished remained in conflict on Installation 00.[5]

During this time, the Flood, who had survived aboard the ruins of High Charity, were inadvertently released by Voridus and Pavium when they breached the containment shield around the structure with a Scarab and deactivated the Ark's Sentinel defense network in the process. The Flood began a second rampage on the Ark, forming a Proto-Gravemind that quickly began turning into a Gravemind. Voridus and Pavium managed to reactivate the Sentinel defense network and with the help of a Retriever Sentinel, killed the Proto-Gravemind before it could finish its transformation into a Gravemind. With the Proto-Gravemind dead, the Banished and the Ark's Sentinels were able to contain the Flood once again and seal off High Charity.[40]

In October 2559, Banished forces raided the Anodyne Spirit for the shards of the Menachite Forerunner crystal recovered from Reach before Atriox managed to send a message to War Chief Escharum in the Milky Way ordering him to locate the Portal Under the Mountain on Reach.[41] Atriox's stated intention was to open a slipspace portal between the Ark and Reach in order to bring more Banished reinforcements to the Ark. At the same time, Blue Team visits Reach on a mission of their own and inadvertently lead the Banished and their allies the Keepers of the One Freedom, Legion of the Corpse-Moon and the Ravaged Tusks to the portal complex. Using one of the Ferrets, secretly undercover in the Keepers, as a Reclaimer, the Keepers were able to open the portal which Atriox used the crystal shards to connect to the Ark. Atriox and several of his top officers flew through the slipspace portal to Reach in a Eklon'Dal Workshop Lich, but Atriox chose to depart in Escharum's intrusion corvette in favor of a more important mission, leaving behind thousands of Banished forces to continue to hold the Ark in his absence rather than returning to the Ark with reinforcements.

After Atriox's arrival on Reach, his Lich was stolen by Castor and his detachment of the fanatical Keepers of the One Freedom who intended to use the Ark in order to fire the Halo Array and begin the Great Journey. Despite Atriox's warnings of the Banished still on the Ark to stop them, Castor's remaining Keepers nevertheless traveled to the Ark through the portal, accompanied by the Ferrets who remained undercover in their ranks. Shortly thereafter, the slipspace portal closed, preventing further travel to or from the Ark through it.[42]

Shortly after arriving on the Ark, the Castor and his forces allied themselves with the Covenant loyalists and set out to use Epsilon Clarion to fire the Halo Array. The allied forces were combated by both the Banished and forces from the Spirit of Fire who both sought to prevent them from succeeding. Both the Banished and the allied Keepers and loyalists suffered heavy casualties, but with the help of the Forerunner archeon-class ancilla Intrepid Eye, the latter faction nearly succeeded. However, on Veta Lopis' signal, the Spirit of Fire launched an orbital bombardment against Epsilon Clarion with EMP rounds from its MAC gun. The bombardment destroyed both the facility and Intrepid Eye while Castor and Inslaan 'Gadogai, now aware of the truth behind the Halo Array and the only survivors of the Keeper detachment, abandoned their pursuit of firing the rings and ended their alliance with the loyalists. With the entire Clarion network now either inoperable or inaccessible, the Ark was left without the ability to fire the Halo Array while the surviving Ferrets joined the crew of the Spirit of Fire and their continuing fight against the Banished for control of the Ark.[43]

Design details[edit]

Halo Wars 2 concept artwork.
The Ark's surface.

Installation 00 resembles a massive flattened dish with a series of eight curved arms, known as spires, four large and four small, arranged around its rim, similar to the petals of a flower. The entire upper surface is terraformed, with oceans, forests and deserts.[13][15] Installation 00 is 127,530 kilometres (79,243 mi) in diameter and thus one of the largest known Forerunner constructs.[4] Spread throughout the installation are hundreds of refugia, artificial biomes designed to sustain diverse flora and fauna as part of the Conservation Measure. Each of these refugia are separated by massive quarantine walls.[6] Twelve refugia are located on the central hub, while an additional twenty are located on the arms of the structure.[44] The various refugia are intended to mimic common planetary environments - one such refugia known as the Halo Refugia[45] bore a notable similarity to Earth's climate, though much more extreme; mountains are higher, chasms are deeper and the sea and sky are a deeper blue.[45]

At the center of the installation is the Foundry, an enormous circular facility used to construct Halos. The core of the 10,000-kilometer-wide Foundry is a hollow space, home to a stripped remnant of a material-rich celestial body used to obtain the vast amounts of resources required for the construction of a Halo ring. When active, the Foundry generates so much heat that the Ark requires multiple cooling stations. At least two such systems span a snowy gorge; it is possible that the massive cooling systems caused this icy climate.[46]

Like the shield worlds, Installation 00 possesses an artificial sun.[13][15][16]

Like the Halos, Installation 00 features multiple Cartographer facilities, map rooms that can pinpoint any location on the installation.[13][47][48] Similarly to the Halos, the Ark features a control room from which the array could be activated. This facility, known as the citadel, is protected by a system of energy shield barriers that encircle the center of the disk. These barriers are controlled by towers that circumscribe the center of the installation.[15]

The Ark also possesses a vast network of power grids beneath its surface. These grids can be tapped into by structures on the surface known as Power Nodes when extra locational power is needed in emergencies. These nodes were co-opted by UNSC and Banished forces in 2559, though Banished Power Extractors were also able to tap into these power networks.[49][50]

The megastructure is also surrounded by numerous other secondary installations, which are used for various support functions. During the Second Ark Conflict, these installations were occupied by the Banished.[51]

Defenses[edit]

The avatar icon of 000 Tragic Solitude.[18]

Similar to most Forerunner installations, the Ark had its own monitor, 000 Tragic Solitude, charged with the facility's defenses. For the most part, Solitude reacted little when humanity and the Covenant arrived at the Ark, though when 343 Guilty Spark attempted to access the Ark's systems during the Battle of Installation 00, Tragic Solitude threatened to add the monitor to the facility's targeting ledger if he persisted.[52] After the Ark was severely damaged by the destruction of Installation 08, the latest on a line of destroyed Forerunner relics, Solitude grew bitter and viewed all sentients in the galaxy as incapable of being peaceful.[22] The arrival of the Human-Covenant War to the installation additionally prompted the activation of Terminus', structures that are designed to perform tireless cataloging, recording of indexing of events in an attempt to prepare countermeasures and defenses for future possible scenarios. These records are cross-references with existing records of historical events and battles to perform simulations and predictions of potential outcomes - losing a terminus would result in a massive loss of operational capability for the installation.[53]

The Ark's small defenses were Aggressor Sentinels created by numerous Sentinel factories just like at the rings. The Retriever Sentinels could also be used offensively, though they were not usually outfitted with weapons until Solitude began arming them. The Ark was also guarded by armigers, humanoid defense droids that were capable of attacking with energy rifles and staves. Tragic Solitude could also take control of the Ark's wildlife and even people through manipulating their brain waves.[22]

After the Battle of Installation 00, Tragic Solitude had a containment shield erected around the ruins of the Covenant holy city of High Charity to contain any surviving Flood within. He also had the Ark's Sentinels raze the perimeter and modify the refugia so that no sentient life survives nearby to deprive the Flood of any host bodies in close proximity to their prison.[54]

Another method of defense are particle cannons upon the Ark's surface. After discovering the location of one through one of the Ark's Cartographers,[47] the smart AI Isabel had Professor Ellen Anders use it to attack the CAS-class assault carrier Enduring Conviction. The cannon alone was not powerful enough to destroy the ship, but after thirty minutes of sustained fire could take down its shields and leave the ship vulnerable to other methods of attack.[55][56]

The Ark also possesses a Sentinel defense network that coordinates Sentinels to assemble and attack anything deemed a threat to the Ark. Isabel utilized the network to destroy the Enduring Conviction by firing the assault carrier's energy projector at the Ark, alerting the Sentinels in the area.[57] Prior to the launch of Installation 09, the security protocols was heightened to finalize the preparation for the launch to its original site and as the part of protocol, the Sentinels release Retriever Sentinel to cleanse the Installation from the threat, including the UNSC and the Banished.[58] During an operation led by Major Vaughan, a Controller Sentinel attacked anyone it deemed a threat, even the UNSC, due to constant abuse of the teleportation network before the Spirit of Fire's arrival.[59] Voridus managed to shut down the Sentinel defense network around High Charity's crash site, but at the price of the Flood being released from the ruined city after he breached the containment shield with a Barukaza Workshop Scarab. When the network was reactivated, the Sentinels resumed their duties and aided the Banished in defeating the Flood, enabling them to enact the containment protocol once again.[40]

Slipspace portals[edit]

A major aspect of Installation 00 was its ability to send and receive objects via slipspace portals. Late in the Forerunner-Flood war, the rebuilt Halo array was dispersed throughout the galaxy through the use of these portals.[60]

In order to ensure the safety of humanity, the Librarian established a portal-generating structure near Mount Kilimanjaro on the human homeworld of Erde-Tyrene.[61] During the Human-Covenant War on November 17, 2552, the Covenant forces under the command of the Prophet of Truth utilized this portal, sparking the Battle of Installation 00. The portal was damaged by the firing of Installation 08 and shut down while the UNSC Forward Unto Dawn was still in transit.[13][32] The portal was eventually repaired and used again in 2555 by Tragic Solitude, though he could not activate its doorway to Earth from the Ark's end due to the firing of Installation 08 severing his control over it. Tragic Solitude managed to increase the power to the portal exponentially, causing travel between Earth and the Ark to be almost instant.[22] After the start of the Created conflict, the Ark's failsafe measures closed it again to keep the Ark out of Cortana's hands.[38] Professor Ellen Anders was unable to figure out how to reactivate it from the Ark, necessitating the launch of Installation 09 in an effort to make contact with the UNSC.[55] Following the departure of Anders and the Halo ring, Captain James Cutter felt that the portal should remain closed until the Spirit of Fire could fully evaluate the Banished threat to it. Cutter ordered Isabel to start investigating the portal's controls in case they needed to open or close it again.[62]

An unknown entity at the Ark generated a portal to transport the UNSC Spirit of Fire, which had drifted in interstellar space for 28 years, to the installation in 2559.[63]

After hijacking the UNSC Rubicon, 343 Guilty Spark used one of the Ark's remaining active portals to return the ship to the galaxy in an effort to find the Librarian. However, after its return to the Milky Way, the Rubicon crashed on Geranos-a.[64]

There is another slipspace portal on Reach similar to the Portal at Voi that the Keepers of the One Freedom and some of the Banished were able to access in October 2559 when combined with Atriox using the shards of the Menachite Forerunner crystal on the Ark's end.[41] However, this portal only remained open as long as the local charge remained rather than remaining continuously open like the Portal at Voi. It closed within a fairly short period of time, but remained open long enough for a Eklon'Dal Workshop Lich to make a two-way trip through the slipspace portal, making it to Reach and the Ark respectively.[65][66]

Trivia[edit]

Production notes[edit]

Language Equivalent
Flag of France.png
French 		L'Arche and Installation 00 in almost every media.

La petite Arche in Halo: Silentium.

Flag of Spain.png
Spanish 		El Arca and Instalación 00 in almost every media.
German Flag.png
German 		Die Arche and Installation 00
Main-Superintendent.png Browse more images in this article's gallery page.
  • The Ark was known as "Waypoint" during the production of Halo 3.[67][68] This name was later rendered canonical by the Halo Waypoint forum administrator Catalog (posing as the Forerunner entity of the same name).[12]
  • In early conceptual stages, artist Paul Russel did not want to make the Ark significantly larger than a Halo ring. One of his early concepts of the Ark design incorporated a cradle for a Halo installation in the center, with four sleek arms on one side of the ring, along with several beams leading to a central hub structure situated on the other side.[69]
  • In Origins, the Ark and the Halos are depicted without land on their surfaces during the activation of the Halo Array. This is likely due to Cortana's interpretation, or an instance of artistic license, as both Halo: Silentium and the terminals in Halo: Combat Evolved Anniversary show that the Ark and the Halos had fully terraformed surfaces prior to the activation of the Array.
  • The Ark as a concept has existed since the development of Halo: Combat Evolved.[70][71] Bungie artist Marcus Lehto produced several sketches of structures for the Ark concept, that would later go on to be refined and considered during the development of Halo 2.[72] These concept images both depict the Ark as a structure within the ground, a concept later instead used for the design of the Portal at Voi in Halo 3.
  • One of the early concepts for the Ark produced in Halo 3, depicting a Forerunner circular structure encasing a regular planet, was later reused in Halo: Escalation Issue 23 for the design of an as-yet unnamed Forerunner installation.

References[edit]

  • The history and name of the Ark are a reference to the Biblical story of Noah, who was instructed by God to build an Ark to save specimens of every animal on Earth from a great flood. The name may also be a reference to Ark of the Covenant, which, according to the Jewish Torah and the Biblical Old Testament, contains the stone tablets of the ten commandments. It is the holiest object of the Jewish faith.
  • The Ark has some similarity to the concept of an Alderson disk. However, an Alderson disk is much larger and has a star in the center.

Gallery[edit]

Concept art[edit]

  • Early concept art depicting a planetoidal Ark.

    Early concept art depicting a planetoidal Ark.

  • The prior concept, reused for the design of a structure in Halo: Escalation.

    The prior concept, reused for the design of a structure in Halo: Escalation.

  • Early concept art of Waypoint, former name of the Ark.

    Early concept art of Waypoint, former name of the Ark.

  • More concept art for Waypoint. The structure in this version of the concept was designed to not have many elements bigger than the Halo it was constructing.

    More concept art for Waypoint. The structure in this version of the concept was designed to not have many elements bigger than the Halo it was constructing.

  • Concept art of the Ark from the surface.

    Concept art of the Ark from the surface.

  • View of this version at night.

    View of this version at night.

  • Concept art of a desert on the installation.

    Concept art of a desert on the installation.

  • Concept art of a structure on the installation.

    Concept art of a structure on the installation.

  • Concept art of a large structure on the installation.

    Concept art of a large structure on the installation.

  • Concept art of Warthogs on their way to a Forerunner building after Installation 08's reveal in Halo 3.

    Concept art of Warthogs on their way to a Forerunner building after Installation 08's reveal in Halo 3.

  • Concept art depicting the Ark and Installation 08 in Halo 3.

    Concept art depicting the Ark and Installation 08 in Halo 3.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

  • Concept art of the installation, for Halo Wars 2.

    Concept art of the installation, for Halo Wars 2.

Screenshots and renders[edit]

  • The Ark in Halo 3.

    The Ark in Halo 3.

  • The size of the Ark compared to that of Earth and a Halo installation.

    The size of the Ark compared to that of Earth and a Halo installation.

  • The desert near the Ark's Cartographer facility.

    The desert near the Ark's Cartographer facility.

  • A holographic representation of the Ark.

    A holographic representation of the Ark.

  • A small mountain clearing near the Citadel.

    A small mountain clearing near the Citadel.

  • A view of one of Installation 00's cooling systems.

    A view of one of Installation 00's cooling systems.

  • The Ark as seen from Installation 08.

    The Ark as seen from Installation 08.

  • The Ark's artificial sun.

    The Ark's artificial sun.

  • A view of most of Installation 00's surface.

    A view of most of Installation 00's surface.

  • The Ark along with the Halo installations prior to their activation.

    The Ark along with the Halo installations prior to their activation.

  • The symbol representing Installation 00.

    The symbol representing Installation 00.

  • Banished and Spirit of Fire forces clash on the Ark.

    Banished and Spirit of Fire forces clash on the Ark.

  • Installation 00 in Halo Mythos.

    Installation 00 in Halo Mythos.

  • A hologram of the Ark in Halo Wars 2.

    A hologram of the Ark in Halo Wars 2.

List of appearances[edit]

Notes[edit]

  1. ^ The original Halo Array was created after the extreme faction of Builders won their political battle with the Prometheans and the Didact was forced into exile, in approximately 98,445 BCE. Installation 00 and its newer array of six rings was created some time after the first Ark, placing its time of construction sometime in the millennium before the firing of the Halos.

Sources[edit]

  1. ^ a b Halo Waypoint, Hero-Fortitude
  2. ^ a b Halo Waypoint: The Halo Array
  3. ^ a b Halo Waypoint: The Brutes
  4. ^ a b c d e f Halo: The Essential Visual Guide, page 14
  5. ^ a b c Halo Wars 2
  6. ^ a b Halo Mythos, pages 122-123
  7. ^ a b Halo 2, campaign level The Great Journey
  8. ^ Halo Encyclopedia (2022 edition), page 343
  9. ^ Halo Waypoint, Canon Fodder: Eklund's Ensemble (Retrieved on Aug 24, 2022) [archive]
  10. ^ Halo Infinite, Banished Audio log: Outpost Intel #09 - Unnatrual Defenses
  11. ^ Halo Encyclopedia (2022 edition), page 444
  12. ^ a b Halo Waypoint: Query: Catalog (old), Halo Waypoint: Catalog Interaction
  13. ^ a b c d e f g h Halo 3, campaign level The Ark
  14. ^ Halo: Primordium, pages 343-344
  15. ^ a b c d e f Halo 3, campaign level The Covenant
  16. ^ a b c Halo 3, campaign level Halo
  17. ^ Halo: Cryptum, page 274
  18. ^ a b Halo 3, Terminals
  19. ^ Halo: Cryptum, page 334-336
  20. ^ Halo 3, multiplayer level Isolation
  21. ^ a b c d Eleventh Hour reports, part 4
  22. ^ a b c d e f Halo: Hunters in the Dark
  23. ^ Halo: Hunters in the Dark, pages 345-346
  24. ^ a b Halo Wars 2, Phoenix Logs - The Healing of Old Wounds II
  25. ^ a b Halo Wars 2, Phoenix Logs - The Healing of Old Wounds III
  26. ^ Halo 3, Terminal One
  27. ^ Halo: Silentium, page 45
  28. ^ Halo: Silentium, String 33
  29. ^ Halo Waypoint - The Trial of Mendicant Bias
  30. ^ Halo Waypoint - Ten Twenty
  31. ^ Halo 3, campaign level The Storm
  32. ^ a b Halo 3, campaign level Floodgate
  33. ^ Halo 3, campaign level Cortana
  34. ^ Halo: Hunters in the Dark, Chapter 2
  35. ^ Halo: Primordium, pages 377-379
  36. ^ Halo Wars 2, Phoenix Logs - Isabel
  37. ^ Halo Wars 2, Phoenix Logs - The Healing of Old Wounds I
  38. ^ a b c Halo Mythos, page 202
  39. ^ GameSpot: Halo Wars 2 New Story Details and Images Revealed
  40. ^ a b Halo Wars 2: Awakening the Nightmare
  41. ^ a b Sacrifice
  42. ^ Halo: Shadows of Reach
  43. ^ Cite error: Invalid <ref> tag; no text was provided for refs named DW
  44. ^ Halo Wars 2, Phoenix Logs - Refugia
  45. ^ a b Halo Wars 2, Phoenix Log - Halo Refugia
  46. ^ Halo 3, multiplayer level Narrows: "Without cooling systems such as these, excess heat from the Ark's forges would render the construct uninhabitable."
  47. ^ a b Halo Wars 2, campaign level The Cartographer
  48. ^ Halo Wars 2, Phoenix Logs - The Cartographer
  49. ^ Halo Wars 2, Phoenix Logs - Power Node
  50. ^ Halo Wars 2, Phoenix Logs - Power Extractor
  51. ^ YouTube - Halo, Halo Lore Stream: The Halo Array: 1:10:51 "There's some stuff in the secondary materials for Halo Wars 2, regarding the fleet that actually went to the Ark with the Enduring Conviction. [...] some of those ships are out at other installations that are near the Ark. So there's the Ark, and there's facilities that are out near the Ark that we don't see - some of those ships are out there doing that. You could say it's a cost function of how many ships we could show in the cutscenes and stuff. Yeah, it [Enduring Conviction] wasn't the only ship that was there." - Kenneth Peters
  52. ^ Halo 3, Terminal 3
  53. ^ Halo Wars 2, Phoenix Logs - Terminus
  54. ^ Halo Wars 2, Phoenix Logs - Idle Hands II
  55. ^ a b Halo Wars 2, campaign level Hold the Line
  56. ^ Halo Wars 2, Phoenix Logs - Enduring Conviction Battle Reports
  57. ^ Halo Wars 2, campaign level Under The Dark
  58. ^ Halo Wars 2, campaign level The Halo
  59. ^ Halo Wars 2: Operation: SPEARBREAKER
  60. ^ Halo Legends: Origins
  61. ^ Halo: Silentium
  62. ^ Halo Wars 2 - Phoenix Logs - Beyond the Edge
  63. ^ Halo Wars 2, campaign level The Signal
  64. ^ Halo: Renegades
  65. ^ Halo: Shadows of Reach, chapter 21
  66. ^ Halo: Shadows of Reach, Epilogue
  67. ^ Isaac Hannaford: rapid environment work 2-6 hours a piece
  68. ^ halo.bungie.org: Re: Halo Concept Art
  69. ^ Picasa: Paul Russel > Halo 3: The Lost City 16/16
  70. ^ Halo: Combat Evolved concept art
  71. ^ Marcus Lehto on Twitter.
  72. ^ Halo: 2 concept art

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The Forerunners

v • d • e
 
Halo Array
Arks
Senescent array
Gyre 01 • Gyre 02 • Gyre 03 • Gyre 04 • Gyre 05 • Gyre 06 • Gyre 07 • Gyre 08 • Gyre 09 • Gyre 10 • Gyre 11 • Gyre 12
Neoteric array
Other

v • d • e
 
Installation components

v • d • e
 
Other installations
Other megastructures
Other facilities
For a complete list, check out our Forerunner category.
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