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"Flame of the Ancient World"
Within a dark and forbidding Vault, where the walls dripped with human flesh, and the screaming of dying echoed through the halls, I found many evil creatures and mutants.Fallout 2 manual

The Los Angeles Vault is a functional demonstration site designed by Vault-Tec to present their Vaults to the public. It held survivors during the War, who would leave to become the peoples of Boneyard. Some decades after the War, it would serve as the Master's main base beneath the Cathedral.


Los Angeles was the site Vault-Tec chose to build their demonstration Vault. During the Great War, people hid in the shelter, which functioned as intended, protecting the inhabitants from the hazards of the nuclear holocaust. When it opened years later, the inhabitants that emerged into the Angel's Boneyard eventually went their separate ways. Some formed the Adytum,[RPG 1] others the Regulators, while others chose to explore the wastes.

It was the latter group that was found by the Master's scouts, thus giving him the location of the Vault. Relocating there, Richard Grey permanently integrated himself into the Vault by neurolinking to the central computer. Slowly his body grew to be a part of it as well.

There is a Cathedral above the Vault. The cult who live within claim the Cathedral is a pre-War structure, miraculously spared from destruction to facilitate the birth of the Master.


The Vault is located south of Vault 13, beneath the Cathedral.



The entrance to the shelter goes through a small cave, linked to the Cathedral's basement. Upon entering, differences from standard Vaults are evident: the airlock is much smaller, the EML-2 room is designed with additional windows, and the main hall is one large chamber. During the Master's reign, two nightkin stood guard at the entrance at all times.

Notable loot[]

Loot in Entrance

Level 2[]

Fo1 Demonstration Vault Labs


The second level also differed in layout, with the elevator located to the side, not in the center. It is possible the super mutants made alterations to the original design. In 2161, the second level housed a chapel, barracks for super mutant guards, a large research lab where mad scientists worked on awakening the psionic potential in humans, and the psyker holding cell and test subject cells.

Notable loot[]

Loot in Level 2

Command Center[]

Command Center

The third level housed the heart of the Unity. Here, apart from the most elite nightkin detachment and their leader, Viscious, the Master resided, united with the overseer's command chair. It is here that the elevator to secure storage is located. Should the Vault Dweller attempt to navigate this area unshielded, they will experience vivid hallucinations, such as voices calling their name, or the dead face of a long-forgotten friend.[1]

Notable loot[]

Loot in Command Center

Nuclear warhead storage[]

Fo1 Demonstration Vault Nuke

Nuclear weapon storage

The deepest level of the demonstration Vault was where the Master kept his ace-in-the-hole weapon. Should the Unity face an enemy it would not be able to defeat, the super mutants would deploy one of the last few remaining nuclear warheads against them. For security reasons, the key to the console was kept in the possession of the Lieutenant.


There are three basic types of inhabitants in the Vault: Super mutants, Children technicians, and mad scientists. Psykers are unique characters, having mental powers.

Unique, named inhabitants include:


The Los Angeles Vault appears only in Fallout and is mentioned in the Fallout 2 manual, the Fallout Bible and Fallout: The Roleplaying Game.



Fallout: The Roleplaying Game

  1. Fallout: The Roleplaying Game Core Rulebook, p. 251: "In 2091, the all-clear signal rang through Vault-Tec’s communication network, in response to reports from radiation sensors on the surface. The first vaults to reopen were Vault 8, and the original Los Angeles demo own, scattered throughout the country for their own vault. They formed the cores of Vault City and Adytum, respectively, and life in the Wasteland began in earnest."