A military bunker located near White Sulphur Springs, West Virginia, designed to hold the entirety of the US government in the event of a nuclear attack. The bunker was built in the 1950s and 1960s, and its existence was kept secret from the public for over three decades. The bunker was used as a command center and emergency relocation site for the US government, and it was equipped with advanced communication and life support systems.
The bunker is now open to the public for tours and has been the subject of various books and documentaries.