Cheyenne Mountain Complex

E100556

Cold War military site bunker military installation underground facility

Cheyenne Mountain Complex is a highly secure, hardened military installation built into Cheyenne Mountain in Colorado, historically known as a central command and control hub for North American air and space defense operations.

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All labels observed (5)

Label	Occurrences
Cheyenne Mountain Space Force Station	5
Cheyenne Mountain Complex canonical	3
Cheyenne Mountain Operations Center	1
Cheyenne Mountain Space Force Station complex	1
NORAD entrance portal (Cheyenne Mountain Complex)	1

How this entity was disambiguated

This entity first appeared as the object of triple T838904 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Cheyenne Mountain Complex
Context triple: [North American Aerospace Defense Command, undergroundAlternateCommandCenter, Cheyenne Mountain Complex]

A. Fort Wainwright
Fort Wainwright is a major U.S. Army installation in interior Alaska that supports Arctic training and operations.
B. Nevada Test and Training Range
The Nevada Test and Training Range is a vast U.S. Air Force training and bombing range in southern Nevada used for advanced military exercises and weapons testing.
C. Pueblo Chemical Depot
Pueblo Chemical Depot is a U.S. Army installation in Colorado historically used for the storage and destruction of chemical weapons.
D. White Sands Missile Range
White Sands Missile Range is a major U.S. Army testing facility in southern New Mexico known for missile and weapons testing and as the site of the first atomic bomb detonation.
E. Nellis Air Force Base
Nellis Air Force Base is a major United States Air Force installation near Las Vegas known for advanced combat training exercises such as Red Flag and for hosting the USAF Warfare Center.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Cheyenne Mountain Complex
Target entity description: Cheyenne Mountain Complex is a highly secure, hardened military installation built into Cheyenne Mountain in Colorado, historically known as a central command and control hub for North American air and space defense operations.

A. Fort Wainwright
Fort Wainwright is a major U.S. Army installation in interior Alaska that supports Arctic training and operations.
B. Nevada Test and Training Range
The Nevada Test and Training Range is a vast U.S. Air Force training and bombing range in southern Nevada used for advanced military exercises and weapons testing.
C. Pueblo Chemical Depot
Pueblo Chemical Depot is a U.S. Army installation in Colorado historically used for the storage and destruction of chemical weapons.
D. White Sands Missile Range
White Sands Missile Range is a major U.S. Army testing facility in southern New Mexico known for missile and weapons testing and as the site of the first atomic bomb detonation.
E. Nellis Air Force Base
Nellis Air Force Base is a major United States Air Force installation near Las Vegas known for advanced combat training exercises such as Red Flag and for hosting the USAF Warfare Center.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	Cold War military site ⓘ bunker ⓘ military installation ⓘ underground facility ⓘ
builtFor	North American Aerospace Defense Command ⓘ
constructionStartDate	1961 ⓘ
controlledBy	North American Aerospace Defense Command ⓘ United States Northern Command ⓘ linked to: U.S. Northern Command
country	United States ⓘ linked to: United States of America
designedToWithstand	electromagnetic pulse ⓘ nuclear blast ⓘ
distanceFrom	about 10 kilometers southwest of Colorado Springs ⓘ
elevation	about 2,135 meters above sea level ⓘ
featuredIn	popular culture depictions of NORAD ⓘ
formerOperator	North American Aerospace Defense Command ⓘ United States Space Command ⓘ linked to: U.S. Space Command
garrison	United States Air Force ⓘ United States Space Force ⓘ
hardenedAgainst	biological attack ⓘ chemical attack ⓘ radiological attack ⓘ
hasAlternateName	Cheyenne Mountain Operations Center ⓘ linked to: Cheyenne Mountain Complex Cheyenne Mountain Space Force Station complex ⓘ linked to: Cheyenne Mountain Complex
hasFeature	air filtration system ⓘ blast doors ⓘ independent power plant ⓘ independent water supply ⓘ shock-mounted buildings ⓘ underground tunnels ⓘ
inaugurationDate	1966 ⓘ
locatedIn	Cheyenne Mountain ⓘ Colorado ⓘ El Paso County, Colorado ⓘ United States ⓘ linked to: United States of America
near	Colorado Springs, Colorado ⓘ
notableFor	highly secure hardened construction ⓘ serving as NORAD command center ⓘ
operator	United States Air Force ⓘ
partOf	Cheyenne Mountain Space Force Station ⓘ linked to: Cheyenne Mountain Complex
primaryFunction	air and space defense operations center ⓘ command and control center ⓘ missile warning center ⓘ
status	operational ⓘ
usedDuring	Cold War ⓘ
usedFor	air defense monitoring ⓘ ballistic missile early warning ⓘ space surveillance ⓘ

How these facts were elicited