Vault 111

Vault 111 is a vault-series fallout shelter developed by Vault-Tec. It is located overlooking Sanctuary Hills, Massachusetts.

Background
Vault-Tec designed Vault 111 to observe the effects of long-term cryogenic suspended animation on unsuspecting test subjects. Subjects were gathered to Vault 111 from the nearby neighborhoods of Sanctuary Hills and Concord and were placed in stasis pods after being told deceitfully that the purpose of the pods was for decontamination.

After witnessing the murder of her husband and the kidnapping of their child, Nora awakens in Vault 111 after being held in cryogenic stasis for 210 years. Upon accessing the Vault 111 monitoring terminal, she learns that all of the other subjects that had entered the vault, except for her and her family, had died of "life support system failure." In Chapter 10, Nora discovers that the mercenary who shot Nate, Conrad Kellogg, was directed not to reactivate the life support for the other residents and not to release them. It is only decades later, due to an error in Vault 111, that Nora is released from cryo-stasis and escapes.