Deep inside a Colorado mountain lurks a remnant of the Cold War era. Buried 2,000 feet beneath Cheyenne Mountain is a secret military complex, where 15 buildings can seal themselves off from the rest ...

Add Yahoo as a preferred source to see more of our stories on Google. Beneath the Rockies lies a Cold War-era fortress, built to survive nuclear war. Brian goes inside the Cheyenne Mountain Complex to ...

Deep inside Cheyenne Mountain, we explore the hidden command center built to keep America operating even in the event of nuclear war. Designed at the height of the Cold War, this underground fortress ...

Andreas Kluth is a Bloomberg Opinion columnist covering US diplomacy, national security and geopolitics. Previously, he was editor-in-chief of Handelsblatt Global and a writer for the Economist.