Question: In addition to its famous zoo, Cheyenne Mountain is home to what notable underground complex?

Answer: Cheyenne Mountain is the site of the Cheyenne Mountain Complex, a military installation and defensive bunker constructed inside the mountain during the Cold War. Built to withstand a 30-megaton nuclear blast as close as 1.24 miles away, the complex has housed several military defense and aerospace warning agencies, including the North American Aerospace Defense Command (NORAD).