The UNSC forces returned to the wall and with the assistance of 343 Guilty Spark, successfully passed through. After the UNSC Forward Unto Dawn landed nearby and deployed a convoy of multiple vehicles, Commander Keyes suggested they go through the wall. When the 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.
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Preceding the firing of the Halos in 97,445 BCE, the IsoDidact and 343 Guilty Spark visited the Ark's Cartographer to review the preparations for the Halo Array's deployment. The interiors of this Cartographer shared many architectural similarities with Alpha Halo's Cartographer shaft, although the two are considerably different in general layout. A Terminal was located within the wall near the activation switch for the energy bridge. Inside the wall was a deep chasm and an energy bridge allowing passage over it. Facing the desert on the other side, the Cartographer structure was protected by a large wall structure. One of the facilities 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. Installation 00, the Ark, was home to several Cartographers. The Cartographer's exterior on Installation 00. A 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. Īn artificial intelligence is able to interface with the Silent Cartographer and, for example, set navigation points on the holographic projection. Due to their significance, the Cartographers are protected by multiple security measures. 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.
![adding a grid campaign cartographer 3 adding a grid campaign cartographer 3](https://www.mapsandmore.com/wp-content/uploads/2011/11/DFSymbols.png)
When activated, a Cartographer provides a real-time 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. Some installations contain a number of discrete Cartographer facilities. A central component of any installation of Forerunner construction, it is found on nearly all of their megastructures, such as the Halo Array and the shield worlds. 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. Installation 00's Cartographer, showing a schematic of the construct.