Vault 3

Vault 3 is one of the Vault-Tec Vaults. The vault is completely intact by 2281, with only some raider graffiti, suggesting that it was only recently vacated, and that the Fiends killed the vaults original occupants when they left.

Location
It is located under a building in the South Vegas Ruins and is the base of operations for a gang known as the Fiends. It's location can be gained from the colonel at Camp McCarran after volunteering to help with the gang problem; or from Elder Mcnamara of the Brotherhood of Steel during the quest Still in the Dark.

Background
Vault 3 was a control vault, not part of the vault experiment. Its citizens lived happily until a water leak in the lower levels forced them to abandon the vault in search of civilization. What they found were the fiends...

Appearances
Vault 3 appears in Fallout: New Vegas.

Krypta 3 Убежище 3