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{{Status|Canon}}
{{Era|HW}}
{{Megastructure infobox
{{Ratings}}
|image=[[File:HW TroveOrbit MattePainting.jpg|300px]]
{{Planet
|description=Hollow planetary shell with terrestrial inner and outer surfaces
|image=[[Image:Halowars shieldworld official.jpg|300px]]
|location=[[Korinth Prior system]], fourth major body, [[Milky Way|Cygnus Arm]]{{Ref/Book|HWF|Page=12}}
|name= Flood-controlled Shield World
|anchor=
|star, position= Unknown
|type=[[Shield world]]
|moon(s)=
|function=Fortress world and conservation facility
|satellite(s)=  
|caretaker=[[295 Harken Watch]]{{Ref/Reuse|Enc22}}<br>[[Unidentified ancilla (Shield World 0459)|Unidentified ancilla]]
|gravity=
|constructed=During or before the [[Forerunner-Flood war]]
|atmosphere= Oxygen-Nitrogen gas
|destroyed=[[2531#February|February 25, 2531]] {{c|Shield world}}{{Ref/Reuse|Escape}}<br>[[2557#June|June 29, 2557]] {{c|Debris field}}{{Ref/Reuse|HRC24}}
|surface temperature=  
|diameter={{Convert|2875|km|mi|sp=us}}{{Ref/Reuse|vis}}
|species= Flood, various animal species
|surface width=
|population= Large amounts of [[Flood]] and [[Sentinels]]
|gravity=0.998 G (approx){{Ref/Reuse|vis}}
|societal approximation=  
|surface temperature=10°C to 31°C (50°F to 87°F){{Ref/Reuse|vis}}
|government=
|atmosphere=1.05 ([[Wikipedia:Nitrogen|N<sub>2</sub>]], [[Oxygen|O<sub>2</sub>]], [[Argon|Ar]]){{Ref/Reuse|vis}}
|technology tier=
|current threat to array= N/A(Forerunner Construct)  
}}
}}
{{Quote|So...am I the only one freaked out by the fact that we're inside the planet?|[[Serina]]}}
This '''Flood-controlled Shield World''' was a [[Forerunner]] [[Shield World|Shield Installation]] deep in [[Covenant Empire|Covenant]] [[Milky Way Galaxy #Covenant|space]]. A variation upon the Shield World concept, originally intended to protect sentient lifeforms from the effects of the [[Halo Array]], it also served as a [[The Apex|port]] for a fleet of [[Unnamed Forerunner Starship|Forerunner Ships]].


'''Trove''' ('''[[Shield World]] 0459''') was a shield installation constructed by the [[Forerunner]]s, located in the [[Korinth Prior system]].{{Ref/Book|Id=Enc22|Enc22|Page=358}} In formal cadence, Trove was known as the '''Etran Harborage''',<ref name="lootcrate4">''[[Halo Legendary Crate]]'', ''[[Halo Legendary Crate/Data Drops|Data Drop #4]]''</ref> owing to the [[Apex Site]] housed within which served as a port for a fleet of {{Class|Sojourner|dreadnought}}s and their docking battle stations.{{Ref/Reuse|Enc22}}{{Ref/Game|HW}} In addition to these functions, Trove served as a conservation sphere, and was intended to protect sentient lifeforms from the effects of the [[Halo Array]] and the [[Flood]].{{Ref/Book|Id=vis|EVG|Page=174}}
== Summary ==
The installation's purpose was to protect lifeforms within it from the [[Halo Array]] and the [[Flood]], and also serve as a port for a massive fleet of [[Unnamed Forerunner Starship|Forerunner ships]].  
[[File:Halo_Wars_shield_world_Matte_by_JJasso-1-.jpg|thumb|246px|Surface panorama]]
Despite the fact that the Shield Worlds were created as a haven from the Array and the Flood, the external surface was heavily infested with Flood biomass, with forms of various types freely roaming across the surface. Sentinels were a rarity on the outside, but this changed within the center, where the many Forerunner constructs worked to prevent the Flood from claiming the interior as well, without much effect.<ref>''[[Halo Wars]]''</ref><ref>http://www.youtube.com/watch?v=y2C7ZvAXOZU</ref>


Despite shield worlds being created as a haven from the Halos and the Flood, the external surface was heavily infested with Flood biomass, with forms of various types freely roaming across the surface. [[Sentinel]]s were a rarity on the outside, but this changed within the center, where the many Forerunner constructs worked to prevent the Flood from claiming the interior as well.{{Ref/Level|Id=Beachhead|HW|Beachhead (Halo Wars level)|Beachhead}}{{Ref/Level|Id=Reactor|HW|Reactor (Halo Wars level)|Reactor}}{{Ref/Level|Id=Escape|HW|Escape (Halo Wars level)|Escape}}
== Structure ==
[[File:BeachheadOpening.png|250px|thumb|right|The Shield World's inner surface.]]
This [[Shield World]]'s main structure consisted of the outer surface, the superstructure and tunnel system inside the crust, and the inner [[Micro Dyson Sphere]], along with it's own miniaturized [[Astroengineering #Stars|artificial sun]]. The outer surface, as well as parts of the superstructure, were largely infested with the [[Flood]]. Some of the Flood even reached to the interior of the world through openings like [[Flood Vent|vents]], but because of the larger numbers of [[Sentinels]], never managed to fully infest it.


Trove was discovered by the [[Covenant]] sometime prior to [[2531]]. February that year during the [[Human-Covenant War]] saw its destruction by the [[United Nations Space Command]] at the end of a [[Battle of Trove|battle]].{{Ref/Reuse|Escape}} A debris field persisted for [[2557|26 years]], at which point a UNSC fleet cleared it on June 29 following its discovery in order to keep it out of the hands of [[Gek 'Lhar]], [[Jul 'Mdama's Covenant]], and anyone else who would try to exploit the surviving technologies for their own benefit.{{Ref/Novel|Id=HRC24|Ren|Chapter=24}}
The ecosystems of the interior and the exterior were radically different, the outer surface being a rocky wasteland with large bodies of water and Flood biomass in some areas. The atmosphere was thick with dust, which may have been a defensive measure to disable starships and prevent them from carrying the Flood off-world.<ref>[[Halo Wars Timeline Events]]</ref>. Parts of the superstructure were also seen on the surface, with chasms reaching deep down into the interior.


==Overview==
The inner Dyson Sphere was completely terraformed and full of plant and animal life, much like the [[Halo Array|Halo installations]] or [[The Ark]]. It also featured different types of Forerunner structures, which in many places were more prominent on the surface than on other Forerunner installations. In the center of the Micro Dyson Sphere there was a miniaturized [[Astroengineering #Stars|artificial star]]. The inner surface had latitudinal lines of structures encircling the sphere. Like many other Forerunner installations, this Shield World possessed a [[Teleportation Grid]].
[[File:Old HW Horizon.png|thumb|250px|Trove's inner surface.]]
This shield world's main structure consisted of the outer surface, the superstructure and tunnel system inside the crust, and the inner miniature [[Dyson sphere]], along with its own miniaturized [[Astroengineering#Stars|artificial sun]] to provide illumination. A series of latitudinal support ribs encircled the megastructure; these were clearly visible on the inner surface. The outer surface, as well as parts of the superstructure, were largely infested with Flood forms. Some of the Flood even reached the interior of the world through openings such as vents, but because of the larger numbers of Sentinels, never managed to fully infest it.


The ecosystems of the interior and the exterior were radically different, the outer surface being a rocky wasteland with large bodies of water and Flood biomass in some areas. The atmosphere was thick with dust, which may have been a defensive measure to disable starships and prevent them from carrying the Flood off-world.{{Ref/Game|HW|[[Halo Wars Timeline Events|Timeline Events]]}} Parts of the superstructure could be seen on the surface, with chasms reaching deep down into the interior.
On this Shield World, there were several unique installations not seen on other Forerunner megastructures.


The inner Dyson shell was completely terraformed and full of plant and animal life, much like the [[Halo Array|Halo installations]] or [[Installation 00|the Ark]]. It featured different types of Forerunner structures, ranging from spires to various walls or embankments and rifts leading into the interior of the structure. Like many other Forerunner installations, Trove possessed a [[teleportation grid|translocation grid]] in form of a network of [[teleporter]]s.{{Ref/Reuse|Beachhead}}
=== Access Tunnels ===
[[File:HW_FR_Architecture2_S-1-.jpg|thumb|250px|The Shield World's tunnel system.]]
The surface of the Shield World had multiple access portals, which could be used to gain access to the Shield World. Most of them were likely hidden, for example covered under large bodies of water, such as the one the {{UNSCShip|Spirit of Fire}} used to enter the Shield World. The access portals were seemingly automated, and controlled by [[Unnamed Forerunner AI|an AI]].
Within the tunnels inside the superstructure, there was a cleansing system, which prevented the Flood from entering the interior. This quarantine system consisted of several "Cleansing Rings", which created energy fields within their diameter, which would destroy any Flood biomass on a passing ship.
On the interior, these portals had six interlocks that needed to be opened in order to unlock the access to the tunnel, and they could only be operated by a [[Reclaimer|human]].
[[Image:Fascination.jpg|thumb|right|200px|[[The Apex]] control center.]]
=== The Apex ===
{{Main|The Apex}}
The Apex site was an installation comprised of a control center on a platform high above the inner surface of the Shield World, and numerous docking towers containing a fleet of Forerunner Ships. The control center was accessible from the ground by a teleporter referred to as Apex Base site, which was on top of a plateau with a series of ramps leading up to it.


===Access tunnels===
=== Other Facilities ===
[[File:HW ShieldWorld Entrance Concept.jpg|thumb|250px|The shield world's tunnel system.]]
This Shield World also features smaller structures not seen elsewhere. These include miniature [[Sentinel Constructor Factory|sentinel production facilities]] referred to as [[Sentinel Shop]]s, small [[Forerunner Bonus Reactor|reactors]], as well as [[Forerunner Supply Elevator|elevators that ferry]] [[supplies]].
The surface of Trove had multiple access portals, which could be used to gain access to the interior of the planet. Most of them were likely hidden; for example, the portal through which the {{UNSCShip|Spirit of Fire}} entered the interior was covered under a large body of water. [[unidentified ancilla (Shield 0459)|The AI]] in control of these access portals would activate docking sequence when a ship passed over one, forcibly dragging the vessel inside by way of a series of field-projecting pylons on the outer surface.{{Ref/Level|HW|Shield World (level)|Shield World}}
 
The tunnels inside the structure had a cleansing system which prevented the Flood from entering the interior. This quarantine system consisted of several "cleansing rings", which generated energy fields within their diameter, which would destroy any Flood biomass on a passing ship.{{Ref/Level|HW|Cleansing}} On the interior, these portals had six interlocks that needed to be opened in order to unlock the access to the tunnel, and like other significant systems on the installation, they could be operated only by a [[Reclaimer]].{{Ref/Reuse|Escape}} However, these interlocks only appeared to be triggered by the presence of the Flood nearby as the Covenant were able to enter and exit the interior shield world at will.
 
===The Apex===
{{Main|Apex Site}}
The Apex Site was an installation comprised of a control center on a platform high above the inner surface of Trove, and numerous docking towers containing a fleet of Forerunner {{Class|Sojourner|dreadnought}}s. The control center was accessible from the ground by a teleporter at the Apex Base Site, which was situated on top of a plateau with a series of ramps leading up to it.{{Ref/Reuse|Reactor}}


==History==
==History==
[[File:ShieldWorldOuterSurface.png|thumb|250px|''Spirit of Fire'' above Trove's outer surface.]]
[[Image:ShieldWorldOuterSurface.png|thumb|right|250px|The Spirit of Fire above the outer surface.]]
===Forerunner-Flood War===
{{quote|This world shall be the [[The Apex|birthplace]] for an [[Unnamed Forerunner Starship|invasion fleet]] beyond imagining!|[[Prophet of Regret]]}}
Trove was constructed during or prior to the [[Forerunner-Flood war]] to serve as both a military outpost to combat the Flood, and to preserve the lifeforms within from the Halo Array's pulse. The shield world was fitted with a fleet of ''Sojourner''-class dreadnaughts, ready to be used to raze the inner surface in case of breach by Flood forces or as an exploratory emergence group to be used following the [[Great Purification]]. During the height of the war, the shield world was attacked and its surface overrun by Flood forces, an event which was able to severely damage the installation's [[Monitor]], [[295 Harken Watch]]. Three [[Promethean]]s, [[Animus-To-Remain]], [[Malice-Begets-Demise]] and [[Habit-To-Sever]], stayed behind on the shield world's surface and gave their lives to defend the Monitor from encroaching Flood - ultimately allowing the Monitor to escape and seal the shield world's interior off.{{Ref/Reuse|Enc22}}


The Flood contamination on the shield world's exterior remained present for millennia following the firing of the [[Halo Array]]. However, a later UNSC expedition to the shield world's ruins suspected the outbreak to be relatively recently as of the 26th century.{{Ref/Reuse|lootcrate4}}
This Shield World was discovered by the [[Covenant]] many years prior to the [[Human-Covenant War]].<ref>"The Day Before", Halo Wars: Official Strategy Guide, pg50</ref> While the Covenant could access it, they weren't able activate its most important installation: [[The Apex]], which contained a massive fleet of [[Unnamed Forerunner Starship|Forerunner ships]], locked in place and unreachable with Covenant technology.  


===Human-Covenant War===
After the war with the [[humans]] began, the Covenant hoped to use the Shield World's stored [[Unnamed Forerunner Starship|Forerunner warships]] to crush the [[UNSC]] quickly, rather than wage the protracted war that would characterise the [[Human-Covenant War]]. The need to find a key to unlock the world had taken precedence over all other tasks, even the search for the [[Halo Array|rings]].<ref>"The Day Before", Halo Wars: Official Strategy Guide, pg50</ref>
{{quote|This world shall be the birthplace for an invasion fleet beyond imagining!|Prophet of Regret}}


Trove was discovered by the Covenant several years before 2531, but then-current Covenant technology could not unlock its secrets. At the outset of the war with [[human]]ity, the Covenant expedited the need to unlock the planet's secrets as to amass a great fleet. They were soon able to break into the interior of the shield world and seal it, though the external Flood infection were noted as persistent. The [[Prophet of Regret]] sent [[Arbiter]] [[Ripa 'Moramee]] to the planet [[Harvest]] to investigate a [[Relic (location)|Forerunner relic]] there that could have held the key.{{Ref/Anthology|Id=OSG|Halo Wars: Official Strategy Guide|The Day Before}}
[[File:HW21.png|thumb|right|The ''Spirit of Fire'' emerges from an access tunnel.]]
In [[2531]], when the Covenant were searching to find a key to activate the Shield World's installations, they came across [[Relic (Structure)|a Relic]] on [[Harvest]], a human colony they had recently [[Glassing|glassed]]. The [[Prophet of Regret]] hoped this would finally be the key to activate the Apex installation, and sent the [[Ripa 'Moramee|Arbiter]] to secure the relic, and find the key.


With the Human-Covenant War ongoing, the Covenant hoped to use the shield world's stored warships to crush the UNSC quickly, rather than wage the protracted war. However, they soon discovered that while they were able to access the installation, they were unable to reactivate the fleet.<ref>''[[Halo Waypoint]]'', [http://halo.xbox.com/en-us/Games/detail/a/9ca82aa8-c0bd-4014-8bd6-7bcf3e131e0b ''"The Halo Wars Story Retold"'']</ref>
However, the structure on Harvest was revealed to be something different: A map room of nearby star systems. The map led the Covenant, and the UNSC support vessel, {{UNSCShip|Spirit of Fire}} in pursuit, to [[Arcadia (Planet)|Arcadia]], another human colony. They found several [[Arcadia Forerunner Ruins|Forerunner ruins]] on the planet<ref>[[Scarab (Level)]]</ref>, but not the key to activate the [[The Apex|installation]].


After the Covenant had observed [[Ellen Anders|Professor Ellen Anders]] activating the [[Relic (location)|Forerunner relic]] on [[Harvest]], the Prophet of Regret ordered the Arbiter to go to Arcadia and capture her, as she seemed to have valuable knowledge about the Forerunners. The Arbiter returned to Arcadia on February 10, captured Anders and brought her to the shield world. [[James Cutter|Captain James Cutter]], commanding officer of the {{UNSCShip|Spirit of Fire}}, to which Anders had been assigned, ordered immediate pursuit out-system.{{Ref/Level|HW|Scarab (level)|Scarab}}
While the [[UNSC]] and the Covenant forces were fighting on Arcadia, the Arbiter had traveled back to the [[Shield World]]. The Prophet of Regret ordered the Arbiter to go to Arcadia and capture [[Professor Anders]], as she seemed to have unusual knowledge about the [[Forerunners]].<ref>Halo Wars cutscene, "Unusually Quiet"</ref>
The Arbiter went back to Arcadia, captured Anders and brought her to the Shield World.  


[[File:ShieldWorldDestruction2.png|thumb|200px|Destruction of the shield world.]]
=== Battle ===
{{Main|Battle of Trove}}
{{Main|Battle of the Flood-controlled Shield World}}
''Spirit of Fire'' arrived in orbit over the shield world, which appeared to be a normal, albeit desolate planet, on February 23. Ground forces were dispatched to the surface, where they discovered the Flood. Many of the reconnaissance teams were infected and it was discovered that Anders' transponder signal was being duplicated by a [[Proto-Gravemind]]; eventually, the Proto-Gravemind was killed in a concerted attack.{{Ref/Level|HW|Anders' Signal}} A few hours later, the ''Spirit's'' shipboard AI [[Serina]] scanned the planet for the professor's signal, which seemed to be originating from an ocean; the ship was suddenly pulled into the shield world's internal docking mechanism. After passing the tunnels inside the installation's superstructure, the ''Spirit of Fire'' emerged within the internal [[Dyson sphere]].
<i>The Spirit of Fire</i> followed the Covenant in close pursuit, tracking Anders' transponder signal. When <i>The Spirit of Fire</i> arrived to the Shield World, a new horrific enemy was discovered: [[the Flood]]. Some time later, when <i>The Spirit</i>'s shipboard [[AI]] [[Serina]] scanned the planet for Anders' signal, which seemed to be originating from an ocean, the ship was suddenly pulled into the Shield World's internal docking mechanism. After passing the tunnels inside the installation's superstructure, <i>The Spirit of Fire</i> emerged into the internal [[Micro Dyson Sphere]].
[[Image:ShieldWorldDestruction2.png|thumb|Destruction of the Shield World.|right|200px]]


Some time later, the Arbiter used Anders, who had been kept prisoner at the Apex Site, to activate the fleet of Forerunner ships. However, as the awestruck [[Sangheili]] watched the fleet's activation, Anders managed to escape via the installation's teleportation grid and regroup with the other humans.{{Ref/Reuse|Beachhead}} She then created a plan to prevent the Covenant from using the Forerunner fleet which involved transporting the reactor of the ''Spirit of Fire's'' [[Shaw-Fujikawa Translight Engine]] to the Apex Site and from there into Trove's [[Astroengineering#Stars|artificial sun]].{{Ref/Reuse|Reactor}} Once the ''Spirit of Fire'' opened the [[door interlock]]s blocking the ''Spirit of Fire'' from exiting the shield world, [[Sergeant]] [[John Forge]] detonated the reactor inside the sun, causing it to go [[supernova]]. The supernova obliterated the Dyson sphere and caused the outer planet to blow up in an immense explosion that left a massive debris cloud.
{{quote|Well, put simply, Captain, our reactor will cause the sun to go supernova, leaving nothing here but dust.| [[Ellen Anders]] to captain [[James Cutter]].}}
Some time later, the [[Ripa 'Moramee|Arbiter]] used Anders, who had been kept prisoner within [[the Apex]], to activate the fleet of Forerunner ships. However, as the awestruck Elites watched the fleet's activation, Anders managed to escape via the installation's [[Teleportation Grid]] and regroup with the other humans. She quickly came up with a plan to prevent the Covenant from using the Forerunner fleet: They overloaded <i>The Spirit of Fire</i>'s [[Shaw-Fujikawa Translight Engine]] to create a chain reaction in the [[Astroengineering #Stars|artificial sun]] in the center of the Shield World, sending it to [[supernova]] state and destroying it from within. <i>The Spirit of Fire</i> was able to escape the Shield World's destruction.


The destruction of Trove destroyed the Flood and Covenant forces on the planet as well as the Forerunner fleet, depriving the Covenant of their planned advantage over the humans using the ships. However, using their Slipspace drive to destroy the planet resulted in the ''Spirit of Fire'' being stranded far from human space with no way home.{{Ref/Reuse|Escape}}
==Comparison with the [[Onyx]] Installation==
Unlike Onyx, which was made up of trillions of [[Onyx Sentinel|Sentinels]], from which a planetary surface had formed, and a massive [[Micro Dyson Sphere|Dyson Sphere]] residing in a compressed [[Slipspace]] bubble in the center of the construct, this [[Shield World]] was far simpler: A hollow structure with planetary surfaces on the interior and exterior.


===Remnants===
The internal [[Micro Dyson Sphere]] was somewhat similar to Onyx's Dyson Sphere, being terraformed and possessing an artificial sun, though it and the entire structure were on a far smaller scale. However, unlike Onyx, it was not designed as a bomb shelter from the [[Halo Array]], but as some sort of harbor, shipyard or hiding place for ships, as it contains [[The Apex]].
After hijacking the {{UNSCShip|Rubicon}} in [[2554]], [[343 Guilty Spark]] intended to take the ship to Trove to obtain an [[upgrade seed]] in order to better prepare the ship for his planned mission to find the [[Librarian]]. However, the ship was destroyed before he could complete the journey and Spark had been unable to connect with the shield world's [[ancilla]], [[295 Harken Watch]], for some time, leaving him unaware that the planet had been destroyed.{{Ref/Novel|Ren|Page=142-143}}


The debris field that was left by Trove's destruction was eventually rediscovered by the ''[[Ace of Spades]]'' in [[2557]] with the ship's captain, [[Rion Forge]], searching for the {{UNSCShip|Spirit of Fire}} and her missing father [[John Forge]]. The ship was able to recover [[Little Bit]], a fragment of the shield world's AI and learn of what had happened.{{Ref/Novel|SaS}} The crew was later forced to turn over what it had learned to [[ONI]] along with Little Bit.{{Ref/Novel|Ren}} [[343 Guilty Spark]] and [[Niko]] eventually managed to extract a copy of Little Bit from his projections on where the ''Spirit of Fire'' had gone after leaving the shield world and fully repair him. Little Bit would go on to become the ''Ace of Spades'' AI.{{Ref/Novel|PoL}}
While this [[Shield World]] appears to be approximately 2900 kilometers in diameter<ref>http://www.youtube.com/watch?v=A8lxRH9zqWw</ref>, Onyx's internal Dyson Sphere's diameter is approximately 150 million kilometers.<ref>Ghosts of Onyx</ref>


{{Main|Mission to the Korinth Prior system}}
As this Shield World had dozens of [[Unnamed Forerunner Starship|Forerunner ships]] stored within it, it is unknown whether the same is true for the Onyx Installation.
Using the data from the ''Ace of Spades'' and Little Bit, the [[prowler]] {{UNSCShip|Taurokado}} embarked upon a mission to the debris field where it encountered a Covenant battlegroup led by [[Gek 'Lhar]]. The ''Taurokado'' retreated from the system following the encounter while the Covenant forces began harvesting the remnants for their own usage.


At the same time, in order to complete his mission, Spark brought the ''Ace of Spades'' back to Trove to get an [[upgrade seed]] for the ship, unaware that the planet had been destroyed. As further incentive for the crew to help him, Spark offered access to the wealth of Forerunner technology within as much needed salvage. As the salvage ship struggled to evade the Covenant, a massive UNSC fleet emerged from slipspace and opened fire on the debris field with [[nuclear weapon]]s to deny its assets to the Covenant. The nuclear weapons would blow the debris to bits and disrupt its gravity around the system's dwarf star. Whatever survived would likely be pulled into the star itself, completely eradicating the shield world. The Covenant fleet retreated into slipspace to avoid being destroyed while Spark managed to get the ''Ace of Spades'' into slipspace in time to avoid destruction as well.{{Ref/Reuse|HRC24}}
{{Wide Image|Halo wars big panorama by JJasso-1-.jpg|1200px|Panorama of the outer surface.}}
{{Expand-section}}


==Trivia==
==Trivia==
{{#widget:Vimeo|id=5079411|width=300|height=170|thumb|caption=Animation breakdown of Trove's destruction}}
*In the cutscenes that show the inner surface of the Shield World, lines of [[Forerunner]] structures can be seen across the land. These could possibly be Forerunner cities.
*While in the pre-rendered cinematics the lines on the inner surface of the shield world are latitudinal, they are longitudinal in-game in the level ''Repairs''. The appearance of the surface is also different, which is likely due to the disparity between the in-game graphics engine and the pre-rendered cutscenes.
*While in the pre-rendered cinematics the lines on the inner surface of the Shield World are latitudinal, they are longitudinal in-game in the level [[Repairs]]. The appearance of the surface is also different. However, this is probably just due to in-game graphical limitations.
*According to a hologram of the Shield World in the final cinematic of Halo Wars, the distance from an exit portal to the sun in the center is 1,437,572.31 meters (1437.6 km). This makes the diameter of this [[Micro Dyson Sphere]] to be approximately 2875 kilometers.<ref>http://www.youtube.com/watch?v=A8lxRH9zqWw</ref>
*The concept of a hollow planet, with a habitable inner surface, is similar to that of a [[Wikipedia:Globus Cassus|Globus Cassus]], a proposal to use the [[Earth]] as building materials to build an enormous hollow megastructure around Earth.
*Multiple new variants of [[Sentinels]] are seen on this Shield World, such as [[Super Sentinel]]s and [[Sentinel Protector]]s.
*Wrecks of [[Unnamed Forerunner Starship|Forerunner Ships]] can be seen on the outer surface of the Shield World, indicating a possible battle between the Forerunners and the [[Flood]].
*It is likely that the [[Flood]] on the Shield World, prior to Covenant arrival, were made up of biomass from [[Forerunner]] bodies.


==Gallery==
==Gallery==
<gallery>
<gallery>
File:Old HW AboveTheClouds.png|Concept art of the [[Apex Site]]'s docking towers on the inner surface.
Image:Shieldogram.png|A [[Holography|hologram]] of the Shield World.
File:HW_ShieldWorld_Portal_Concept.jpg|Concept art for the entrance to the shield world.
Image:SofInShieldWorld.png|{{UNSCShip|Spirit of Fire}} inside the Shield World's superstructure.
File:Shieldogram.png|A [[Holography|hologram]] of Trove in ''[[Halo Wars]]''.
Image:ShieldW_Surface_Closeup.png| The [[Flood]]-infested outer surface of the Shield World.
File:SofInShieldWorld.png|{{UNSCShip|Spirit of Fire}} inside the shield world.
Image:RepairsOpening.png|The Spirit of Fire emerging into the interior of the structure.
File:Old HW Infestation.png| The Flood-infested outer surface of Trove.
Image:HW25.png|The Shield World's internal star, before going supernova.
File:HW Trove Exterior MattePainting 3.jpg|Panorama of the outer surface.
File:Shield World Portal.jpg|The Shield World Portal that the {{UNSCShip|Spirit of Fire}} must exit through.
File:HW Trove Exterior MattePainting 1.jpg|Surface panorama.
File:HW Trove Exterior MattePainting 2.jpg|Surface panorama.
File:Hw_ShieldW_buildings.png|Structures on the inner surface.
File:HW21.png|The ''Spirit of Fire'' emerges from an access tunnel.
File:HW25.png|The shield world's internal star, before going supernova.
File:HW EscapePortal Concept.jpg|The portal the ''Spirit of Fire'' escaped through.
File:HW Screenshots Live 2.jpg|The Apex control center.
File:BeachheadOpening.png|The shield world's inner surface.
File:HM-Cutter&Serina.png|Trove in ''[[Halo Mythos]]''.
File:LC 004 Taurokado.png|The {{UNSCShip|Taurokado}} traversing the shield world's debris field in [[2557]].
</gallery>
</gallery>


==List of appearances==
==Related Links==
*''[[Halo Wars]]'' {{1st}}
* [[The Apex]]
*''[[Halo Mythos]]''
* [[Micro Dyson Sphere]]
*''[[Halo: Tales from Slipspace]]''
* [[Shield World]]
**''[[Something Has Happened]]'' {{Mo}}
*''[[Halo: Smoke and Shadow]]'' {{c|Fragments only}}
*''[[Halo Wars 2]]'' {{Mo}}
*''[[Halo: Renegades]]'' {{c|Fragments only}}
*''[[Halo: Point of Light]]'' {{Mo}}
*''[[Halo: Fireside]]'' {{Mo}}


==Sources==
==Sources==
{{Ref/Sources}}
<references/>


{{Forerunner|array}}
{{Forerunner2}}
[[Category:Shield worlds]]
[[Category:The Forerunner]]
[[Category:The Flood]]
[[Category:Planets]]
[[Category:Places]]

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