Mysteries of the Abandoned: Hidden America: Season 1, Episode 4 - ProjectFreeTV

1 - 4: Black Hills Ordinance Depot

A sprawling military facility dotted with bunkers for miles now stands abandoned in the American heartland of Edgemont, South Dakota. Experts investigate and uncover the Black Hills Ordinance Depot, a once highly-secure WWII ordnance site designed to store deadly munitions.