Cheyenne Mountain
From the UAP Encyclopedia, the open encyclopedia of UFO and UAP history · 📍 Place
Contents 5

| Type | Place |
|---|---|
| On the Timeline | 4 events, 1955–1998 |
The Cheyenne Mountain Complex is a hardened U.S. military command centre built inside Cheyenne Mountain near Colorado Springs, Colorado. For decades it was the headquarters of NORAD's operations, tracking aircraft, missiles and objects in space — including unidentified ones — over North America.[1][2]
Construction

Excavation began on 18 May 1961 under the U.S. Army Corps of Engineers, and the complex was completed in 1966 and fully operational by early 1967. It lies under about 600 metres (2,000 feet) of rock. Behind a 25-ton blast door, fifteen three-storey buildings stand on more than 1,000 springs to absorb shock from a nuclear blast, and the complex is certified to withstand an electromagnetic pulse.[1]
Role

During the Cold War the complex housed NORAD's command centre, responsible for warning of air and missile attack. In 2008 NORAD and U.S. Northern Command moved their main operations to nearby Peterson Air Force Base, and the mountain became an alternate command centre and training site. In 2015 a $700 million contract was announced to move further systems into the complex and protect them against electromagnetic pulses.[1][2]
In popular culture

The complex has appeared in the film WarGames (1983), as the base of "Stargate Command" in the television series Stargate SG-1, and in many other films and games, contributing to its image as a place where secrets are kept.[1]
On the UAP Timeline

- Tompkins's secret space program claims (1 March 1955) — Tompkins also describes alleged secret underground bases tied to a hidden space program.
- Charred body in Colorado claim (1978) (1978) — An Air Force technician says he saw a charred alien body at an underground site in Colorado.
- Cheyenne Mountain and Lake Kickapoo sighting (1986) (December 1986) — A Navy officer says sensors at Cheyenne Mountain detected a UAP.
- Former colonel's underground facilities claim (1998) (17 June 1998) — A researcher says a former colonel claims he worked in underground facilities.
References
- Cheyenne Mountain Complex — Wikipedia · en.wikipedia.org · archived copy
- NORAD — Wikipedia · en.wikipedia.org · archived copy
This page was last edited on 29 October 2026. Articles are written in our own words from the sources listed under References; disputed claims are attributed to the people who made them.
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