Fort Atlas

Fort Atlas is a location in the Savage Divide region of Appalachia, formerly known known as ATLAS Observatory. Once the site of an advanced military science project, the observatory lay dormant for years following the Great War, inhabited by hostile robots. In 2103, Russell Dorsey collaborated with the Vault Dwellers of Vault 76 to construct a base for the incoming Brotherhood First Expeditionary Force, using the observatory as their construction site. Upon arrival, the Brotherhood renamed the facility to Fort Atlas, converting it into its current appearance.

Pre-War
While appearing to simply be an astronomical research laboratory, ATLAS was a military project on weather modification. Scientists worked here to advance the ATLAS Program, or Atmospheric Terraforming Laser Accelerator System before the Great War.

Post-War
In 2103, Lucky Lou scavenged several automated turrets from the observatory for use in attempting to commit suicide and avoid turning feral. Later that year, Russell Dorsey established a campsite near the facility's entrance and, with the assistance of his utility Protectrons, began constructing a framework around the structure. This included various elevated platforms, a medical tent, a landing pad, and deliberately sealing the observatory's interior.

By late 2103, he had garnered the assistance of the Vault Dwellers in helping him fortify and establishing the new headquarters for the Brotherhood First Expeditionary Force. Upon arrival, the Brotherhood fully occupied the base and renamed it to Fort Atlas.

Exterior
The observatory caps the crest of a hill along Route 63 east of Monongah. There are three entrances to the building. The exterior of the building has been re-inhabited by Russell Dorsey and several Brotherhood initiates and hopefuls.

Various platforms now provide easy access to higher parts of the structure. Near the eastern entrance, an armor workbench, weapons workbench, and power armor station can be found alongside a stash box. A small medical tent lies above the southern entrance, and a small residential tent has been assembled to the south.

Interior
The building is a multi-level structure with border rooms encircling a vaulted central room that houses the telescope. There are two weapons and one armor workbench on the upper level of the basement.

Main interior

 * ATLAS Research Log 104 - Holotape, on the table next to Scribe Valdez's terminal.
 * ATLAS Research Log 293 - Holotape, on the table next to Scribe Valdez's terminal.
 * Knight Connors: Report - Holotape, on a bench in the western barracks room on the first floor.

ATLAS substructure

 * ATLAS decommission reports - Notes, found throughout the bottom level of the substructure.
 * The first is found on a console near the ATLAS diagnostics terminal.
 * The second is found on a wooden cart near the skeleton of Isaac Hammond.
 * The third is found on a metal cart along some piping, to the right after going down the stairs from the main entrance of the substructure.
 * Potential magazine - In the mine section during The Best Defense, on a shelf near the top part of a conveyor belt in the medium-sized room with the catwalk and office niche.
 * Two potential recipes:
 * One in the mine section, near the wall-mounted terminal and connected supply room, on a cabinet at a nearby dead end.
 * One on a shelf near the westernmost tunnel girder, in the final room of the mine section.
 * CPU - Quest item, obtained from the ATLAS data center terminal during Mother of Invention. May be in good condition, damaged, or destroyed, depending on quest choices.
 * Induction coil - Quest item, obtained from the top of the central machine during Mother of Invention. May be in good condition, damaged, or destroyed, depending on quest choices.
 * Ion focus - Quest item, obtained from the base of the central machine during Mother of Invention. May be in good condition, damaged, or destroyed, depending on quest choices.
 * Mysterious component - Quest item, obtained from the top of the central machine after acquiring the induction coil during Mother of Invention. Always in good condition.
 * Pressure gauge - Quest item, obtained from a yellow machine in a side room of the upper chambers during Mother of Invention. May be in good condition, damaged, or destroyed, depending on quest choices.

Appearances
Fort Atlas appears only in Fallout 76. Formerly known as ATLAS Observatory, it was expanded upon in The Legendary Run update, before being fully converted to Fort Atlas with Steel Dawn.