Deep below the Greenbrier Hotel in White Sulphur Springs, West Virginia, is a vast and elaborate underground bomb shelter. Established as part of the secret Continuity of Government program, to house members of Congress in the event of a nuclear attack, the bunker is now declassified and open for public tours. This film documents the eerie spaces of the vacant shelter, its remarkable blast doors which were engineered by the Mosler Vault Company, and the dedicated staff who continue to care for it.