Underground Bases
Colorado Springs/NORAD
4.5 cubic miles facility with 45 underground steel buildings, 1278 miles of roads, tracking satellites/missiles/submarines/UFOs
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The Colorado Springs/NORAD facility represents one of the world's largest and most sophisticated underground military installations, carved deep into Cheyenne Mountain. The complex spans 4.5 cubic miles with 45 steel buildings housing command centers for tracking satellites, missiles, submarines, and anomalous aerial phenomena. This hardened facility serves as the primary defense command center for North American aerospace operations.