In Photos: The U.S. Plan During a Nuclear Armageddon

Mount Pony, Culpeper, Virginia

The site of a former nuclear bunker known as Mount Pony, where the Federal Reserve secretly stockpiled billions of dollars in cash, which they planned to use to replenish currency supplies after Armageddon. In 2007 the facility was converted to the Library of Congress’s Packard campus for audio-visual conservation. It now provides underground storage for the library’s vast collection of films and audio recordings

Corkscrew, Maryland

A nuclear-hardened communications tower and bunker known by the codename Corkscrew, on Lamb’s Knoll near Park Hall. Corkscrew was one of a network of towers secretly built during the cold war. It has since been deactivated and the site is now used by the Federal Aviation Administration

Cheyenne Mountain air force station, Colorado Springs

The north entrance portal – part of a two-mile long tunnel blasted through granite – serves as the primary entrance to the North American Aerospace Defense Command facility. More than 300 people work inside Cheyenne Mountain