Editing Cartographer

{{Era|Forerunner|HCW}}
[[File:Ark.JPG|thumb|right|350px|[[Installation 00]]'s Cartographer, showing a schematic of the construct.]]
The '''Cartographer''' is a dedicated [[Forerunner]] facility designed to contain and provide access to the '''Silent Cartographer''', a program featuring the complete real-time record and schematics of an installation.<ref>'''Halo: Primordium''', ''page 295''</ref> A central component of any installation of Forerunner construction, it is found on nearly all of their [[Astroengineering|megastructures]], such as the [[Halo Array]] and the [[shield world]]s.<ref name="vis">'''[[Halo: The Essential Visual Guide]]''', ''page 30''</ref>

When activated, a Cartographer provides a real-time [[Holography|holographic]] map which can be used to navigate the massive expanse that is an installation, along with other relevant information such as pinpointing every room or location within the vast structure. The Cartographer facilities on the various Forerunner installations differ in layout and design, though the primary map rooms on the Halo installations are buried within large structures housing a network of compartments and rooms. Like the map rooms on most Forerunner facilities, the Cartographers of the Halos are protected by multiple security measures.<ref name="vis"/>

An [[artificial intelligence]] is able to interface with the Silent Cartographer and, for example, set [[navigation point]]s on the holographic projection.<ref name="vis"/> A [[Forerunner personal armor|Forerunner armor's]] personal [[ancilla]] was able to link with the Cartographer and provide packets of information on the installation's past activities directly into the wearer's brain.<ref name="sil243">'''Halo: Silentium''', ''pages 243-244''</ref>

==Halo Array==
===Installation 00===
[[File:TLJ Cartographer.PNG|thumb|right|250px|The Cartographer's exterior on Installation 00.]]
The Cartographer of [[Installation 00]] was located on top of a massive spire structure, the map room itself lying in a wide open area giving a panoramic view over a massive waterfall and an ocean. Facing the desert on the other side, the Cartographer structure was protected by a large wall structure. Inside the wall was a deep chasm and an [[energy bridge]] allowing passage over it. A [[terminal]] was located within the wall near the activation switch for the energy bridge. The interiors of the Ark's Cartographer share many architectural similarities with [[Installation 04|Alpha Halo]]'s Cartographer shaft, although the two are considerably different in general layout.<ref name="theark">'''Halo 3''', campaign level ''[[The Ark]]''</ref>

Preceding the firing of the Halos in [[100,000 BCE]], the [[IsoDidact]] and [[343 Guilty Spark]] visited the Ark's Cartographer to review the preparations for the Halo Array's deployment.<ref>'''Halo: Silentium''', ''page 309''</ref> When the [[United Nations Space Command|UNSC]] and [[Sangheili]] forces landed on the Ark during the [[Battle of Installation 00]] in [[2552]], they were prevented access to the Cartographer by its exterior wall. After the {{UNSCShip|Forward Unto Dawn}} landed nearby and deployed a convoy of multiple vehicles, [[Miranda Keyes|Commander Keyes]] suggested they go through the wall. The UNSC forces returned to the wall and with the assistance of [[343 Guilty Spark]], successfully passed through. The UNSC and the Sangheili breached the [[Covenant]]-held Cartographer with the aid of 343 Guilty Spark, and used the map facility to locate the [[Prophet of Truth]].<ref name="theark"/>

===Installation 04===
[[File:The Silent Cartographer Building.jpg|thumb|right|250px|Installation 04's Cartographer.]]
On Installation 04, the Cartographer was located in an immense underground facility, below the middle of a large island. It was protected by a security system accessible by another underground facility on the other side of the island. These facilities were a part of the installation's larger tunnel network, with a massive shaft leading to the depths of the megastructure in between them. 
After disabling the security system, the main passageway to the map room was opened. For additional security measures, the Cartographer's chamber and activation panel were located on the other side of the island, and buried at least half a dozen floors below ground. The path down to the Cartographer was a labyrinth of twists and turns, making it easy to get lost.<ref name="HCE">'''Halo: Combat Evolved''', campaign level ''[[The Silent Cartographer]]''</ref>

On [[2552#September|September 20, 2552]], [[SPARTAN-II Program|Spartan]] [[John-117]] and two squads of marines were ordered by [[Captain (Navy)|Captain]] [[Jacob Keyes]] to secure the Cartographer so that they could locate Halo's control room. The soldiers landed on a Covenant-controlled beach, which they quickly captured. The Spartan soon entered the Cartographer facility, though it had been locked from within. After disabling the lock at a nearby security station, the Spartan accessed the Cartographer, learning the location of Installation 04's control room. The AI [[Cortana]] then requested that [[Carol Rawley|Flight Captain Carol "Foehammer" Rawley]] fly John-117 below ground to the control room, though they stopped at [[Alpha Base (Installation 04)|Alpha Base]].<ref name="HCE"/><ref>'''Halo: The Flood''', ''page ???''</ref>

===Installation 07===
The Cartographer of [[Installation 07]], one of the original twelve Halos, was a massive structure, surpassing all of the other known Cartographer sites in scale. The map room was housed in an enormous, triangular structure protruding toward the Halo's interior out of one of the walls lining the ring's edges. The structure was shaped like a flat-topped wedge around 500 kilometers wide at its base, where it connected with the Halo's edge wall and was around 400 kilometers long from base to tip. Most of the structure's upper surface, apart from the tip, appeared largely uniform and featureless when observed from a distance. However, the wedge's tip housed a complex of vast, secondary structures, some of them dozens of kilometers high. A sleek half-arch stretched beyond the wedge's tip and an ornate lattice of cabling attached to this structure supported the main Cartographer control center, itself a complex of enormous structures, each of them the size of a small city.<ref>'''Halo: Primordium''', ''pages 319-320''</ref>

The control center itself housed a series of platforms and walkways, some of them crisscrossing in many directions and facing a variety of complex display terminals monitoring the Halo's systems. Some of the walkways actually faced up- or downward in right angles and allowed passage by means of localized gravity manipulation along their surfaces.<ref>'''Halo: Primordium''', ''pages 321-322''</ref>

Like several other control facilities across the ring, the Cartographer was equipped with stations allowing biological beings to interface with the Halo's systems in an emergency. During [[Mendicant Bias]]' and the [[Primordial]]'s attempt to save the ring from collision with the [[wolf-faced planet]], [[Chakas]] and a number of other humans were connected to one of these systems along with [[Composer]]-processed Forerunners, the latter supposedly necessary because the humans alone did not possess the knowledge or intellect necessary to properly interface with the ring despite having been previously imprinted with the knowledge necessary for the task.<ref>'''Halo: Primordium''', ''pages 303-304''</ref>

This system used an elaborate webbing projected by a rod-like object to directly connect to each human-Forerunner pair via their skin, completely melding their neural networks with the Cartographer's controls. With the individual's consciousness now merged with the Halo's computer systems, they were flooded with the vast amounts of information and sensory input flowing through the Cartographer. The organic controllers, along with the Halo, formed a cybernetic gestalt intelligence which perceived the surrounding reality through the Halo's sensor systems and abstractions provided by the Cartographer.<ref>'''Halo: Primordium''', ''pages 329-330''</ref> Numerous different event-paths and outcomes were consistently being calculated and processed while the controllers steered the ring and incessantly performed minute adjustments to its numerous systems.<ref>'''Halo: Primordium''', ''page 342''</ref> After the IsoDidact arrived to retake the ring, he entered the Cartographer and connected to the system with Chakas in order to see the ongoing salvage effort to the end.<ref>'''Halo: Primordium''', ''page 339''</ref>

===Greater Ark===
Like all installations involved with the Halos, the [[greater Ark]] possessed a Cartographer. During the final weeks of the [[Forerunner-Flood war]], this facility was the site of an emergency meeting between the Forerunner military leaders before the imminent Flood [[Battle of the greater Ark|attack on the greater Ark]]. The commanders conferred in a circle within an enormous hologram of the Ark while updates on the installation's status were provided through their [[ancilla]]s.<ref name="sil243"/> [[Omega Halo]], the sole Halo ring present at the Ark at the time, was also projected in the hologram.<ref>'''Halo: Silentium''', ''page 248''</ref>

==Shield worlds==
===Onyx===
[[Onyx]] also featured a map room, deep below the Forerunner city in what the [[Office of Naval Intelligence]] referred to as [[Zone 67]]. Onyx's map center was located below a massive domed structure in the city.<ref>'''Halo: Ghosts of Onyx''', ''page 270-271''</ref> Below one of seven massive landing pads in the interior was a spiraling staircase which led into a smaller chamber.<ref>'''Halo: Ghosts of Onyx''', ''page 273-274''</ref> The chamber housed an [[energy bridge]], which led to the map room itself; a half-spherical chamber about 20 meters across. In the center was a holographic console which could project detailed schematics of the entire Onyx construct.<ref>'''Halo: Ghosts of Onyx''', ''page 275''</ref> The room also featured a [[Teleporter|translocation platform]].<ref>'''Halo: Ghosts of Onyx''', ''page 311''</ref>

[[Catherine Halsey|Dr. Halsey]] used this Cartographer structure during the [[Battle of Onyx]], when she was trying to find the way to the [[core room antechamber|portal]] that led to the [[Shield World]] in the core of the artificial planet.<ref>'''Halo: Ghosts of Onyx''', ''page 276''</ref>

===Requiem===
A localized Cartographer facility was accessed by [[John-117]] and [[Cortana]] shortly after their arrival on [[Requiem]] during the [[First Battle of Requiem]] in [[2557]]. From this facility, they learned the name of the shield world, although Cortana's further attempts at accessing the data within were quickly deterred by the [[Ur-Didact|Didact]].<ref name="requiem">'''Halo 4''', campaign level ''[[Requiem (level)|Requiem]]''</ref>

==Trivia==
*[[Monitor]]s only have built-in map systems for their own Installations, which is why UNSC forces must visit [[Installation 00]]'s Cartographer, despite being accompanied by [[343 Guilty Spark]].
*The multiplayer level [[Construct (level)|Construct]] takes place on the Cartographer building of Installation 00.

==Gallery==
<gallery>
File:Anniversary Marines.jpg|Marines storm the beach on Installation 04's Cartographer island.
File:HA SC 1.jpg|A view of the beach near the Cartographer.
File:HA SC 2.jpg|The exterior of the Cartographer's security facility in ''[[Halo: Combat Evolved Anniversary]]''.
File:Carto.jpg|Alpha Halo's Silent Cartographer before activation.
File:Carto01.jpg|The Silent Cartographer after activation.
File:Carto02.jpg|John-117 watches as the Silent Cartographer finalizes mapping the sections of the installation.
</gallery>
{{Linkbox|gallery=yes|gallerypage= Images of Silent Cartographer}}
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==List of appearances==
*''[[Halo: Combat Evolved]]'' {{1st}}
*''[[Halo: The Flood]]''
*''[[Halo: Ghosts of Onyx]]''
*''[[Halo 3]]''
*''[[Halo: Primordium]]''
*''[[Halo: Combat Evolved Anniversary]]''
*''[[Halo 4]]''
*''[[Halo: Silentium]]''

==Sources==
<references/>
{{Forerunner|array}}
[[Category:Installation 04]]
[[Category:Forerunner buildings]]