Background: Deep in the bowels of Cheyenne Mountain is a city-like military complex that once served as North American Aerospace Defense Command (NORAD) 's center.

背景材料：在夏延山的深处像一座城市一样的军事综合隧道，一度作为北美防空司令部(NORAD)的中心。

youdao

The resort includes a series of buildings set around a lake below Cheyenne Mountain.

FORBES: Hotels I Love: The Broadmoor, Grand Dame Of The American West

This will sit at the very summit of Cheyenne Mountain and look over The Broadmoor and the plains to the east, Pikes Peak to the north and the Colorado Rockies to the west.

FORBES: The Broadmoor Earns Its 53rd Consecutive Five-Star Award

Defense Operations Center at Cheyenne Mountain, Colo.

CENTERFORSECURITYPOLICY: Don��t Sell the Patriot to Moscow