Mysteries of the Abandoned

Secrets of the Doomsday Caves (5x6)

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A vast network of subterranean bunkers in the American west was home to the power to destroy nations, but today, this facility is deserted. Stories: 1) Larson Missile Silo, Washington, USA; 2) Rangsdorf Airfield, Berlin, Germany; 3) Mesa Verde, Colorado, USA; 4) Castries Harbor, St. Lucia, Caribbean