Vault 13

"'Your family was part of that group that entered Vault 13. Imprisoned safely behind the large Vault door, under a mountain of stone, a generation has lived without knowledge of the outside world. Life in the Vault is about to change.'"

Overview
Vault 13 is one of a series of fallout shelters developed by Vault-Tec in southern California beneath Mt. Whitney. It is located west of Shady Sands and Vault 15, and east of Mariposa Military Base. It was the home of the Vault Dweller.