An underground base is a subterranean facility used for military or scientific purposes.
Examples are:
- Cheyenne Mountain Complex
 - Chiashan Air Force Base
 - Iranian underground missile bases
 - Raven Rock Mountain Complex
 - Zeljava Air Base
 
There may be more than 10,000 underground military facilities worldwide.[1]
See also
References
- ↑ Richelson, Jeffrey T. "U.S. Intelligence: Hiding of Military Assets by "Rogue Nations" and Other States a Major Security Challenge for 21st Century". gwu.edu. George Washington University. Retrieved 16 July 2020.
 
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