During the cold war, the US Federal reserve needed a place to store enough US currency to replenish the country east of the Mississippi, in case of a nuclear strike. In 1969, a bunker was built into the bedrock of Mount Pony in Culpeper, Virginia to hold billions of dollars in US currency. It had 7 computers that were tied into the Federal reserve system as well as barbed wire fences, guards and other forms of protection.