Military Bases
Documenting global surface military installations with known or corroborated underground infrastructure โ sourced from public defense records, declassified archives, and verified reporting.
Browse by Country
Select a country to explore documented military installations with underground components. All entries are sourced from public records.
USA
Cheyenne Mountain Complex is a verified subterranean command center located 2,000 feet beneath granite in Colorado.
Afghanistan
Bagram Airfield contained extensive subterranean hangars and command bunkers documented in Soviet-era and coalition records.
Australia
Pine Gap is a joint defence facility with corroborated subterranean signal intelligence and command assets.
Austria
No documented military installations meeting our evidence standards at this time.
Belgium
No documented military installations meeting our evidence standards at this time.
Bosnia
ลฝeljava Air Base was a massive underground military complex capable of housing two fighter jet squadrons โ documented in Yugoslav military records.
Brazil
No documented military installations meeting our evidence standards at this time.
Canada
The Diefenbunker is a verified Cold War-era central emergency government headquarters built underground in Carp, Ontario.
China
Yulin Naval Base features a corroborated subterranean submarine facility excavated into the Hainan coastline.
Czech Republic
Javor-51 is a documented former Soviet nuclear warhead storage facility located underground.
Denmark
No documented military installations meeting our evidence standards at this time.
Egypt
New Administrative Capital โ reported subterranean command infrastructure, not yet independently corroborated.
England
Burlington is a 35-acre subterranean city built as a Cold War-era government relocation headquarters in Corsham, Wiltshire.
Finland
The Helsinki Underground Shelter Network is a verified massive civilian and military defense complex.
France
The Albion Plateau formerly housed a verified network of hardened subterranean nuclear missile silos.
Georgia
No documented military installations meeting our evidence standards at this time.
Germany
The Marienthal government bunker was a verified Cold War relocation facility for the West German leadership.
Greece
No documented military installations meeting our evidence standards at this time.
Hong Kong
The Shing Mun Redoubt is a verified historical underground citadel featuring a network of defense tunnels.
Hungary
The Tรณtvรกzsony site is a corroborated former Soviet nuclear storage facility documented in post-Cold War records.
India
The Indian Army maintains corroborated hardened subterranean command and storage facilities in the Ladakh region.
Indonesia
No documented military installations meeting our evidence standards at this time.
Iran
Fordow is a verified uranium enrichment facility located deep within a mountain for strategic protection โ IAEA documented.
Iraq
Saddam Hussein's Baghdad bunkers were verified massive subterranean command and control facilities documented in coalition records.
Israel
The Negev Nuclear Research Center is a corroborated facility with significant subterranean laboratory and storage assets.
Italy
West Star was a verified Cold War-era NATO command center located deep inside Monte Moscal, decommissioned 2007.
Japan
Matsushiro Imperial HQ is a verified historical 10km tunnel network built as a wartime command center beneath Mt. Zo.
Libya
No documented military installations meeting our evidence standards at this time โ pending source verification.
Malaysia
No documented military installations meeting our evidence standards at this time.
Mexico
No documented military installations meeting our evidence standards at this time.
Netherlands
No documented military installations meeting our evidence standards at this time.
New Zealand
Stony Batter is a verified historical subterranean military fortress with an extensive tunnel network on Waiheke Island.
North Korea
The Kanggye facility is a corroborated subterranean weapons and command complex documented in public satellite imagery analysis.
Norway
Olavsvern is a verified Cold War-era subterranean naval base carved into a mountain in the Arctic region.
Pakistan
Sargodha Air Base is corroborated to contain hardened subterranean shelters and storage sites documented in public defence records.
Philippines
Corregidor Island features the verified historical Malinta Tunnel complex used as a military headquarters during World War II.
Poland
Project Riese is a verified massive historical Nazi-era subterranean construction project in the Owl Mountains, partially open to the public.
Romania
No documented military installations meeting our evidence standards at this time.
Russia
Yamantau Mountain is a corroborated subterranean complex believed to be a strategic command site โ documented in public US Congressional records.
Saudi Arabia
Al-Watah is a verified ballistic missile base featuring subterranean entry and storage infrastructure documented in public satellite analysis.
Serbia
Ponikve Airport features verified subterranean hangars and command facilities built into the surrounding hills.
South Africa
Project Vesta is a corroborated former subterranean nuclear research facility documented in post-apartheid public records.
South Korea
CP Tango is a verified joint-command subterranean bunker designed to withstand nuclear impacts โ documented in USFK public records.
Spain
Torrejรณn Air Base contains corroborated hardened subterranean command and control centers documented in NATO records.
Sweden
Muskรถ is a verified massive subterranean naval base containing ship docks and command centers carved into granite rock.
Switzerland
The National Redoubt is a verified network of subterranean fortresses and command bunkers built into the Alps โ Swiss Federal records.
Taiwan
Chiashan Air Force Base is a verified subterranean airbase capable of housing over 200 fighter aircraft โ Taiwanese MND records.
Thailand
No documented military installations meeting our evidence standards at this time.
Turkey
Incirlik Air Base contains verified subterranean vaults for strategic weapons storage โ documented in public NATO and DoD records.
Ukraine
Several Soviet-era ICBM silo complexes are verified former subterranean military installations documented in declassified records.
Vietnam
The Cu Chi Tunnels are a verified historical subterranean military network used during the Vietnam War โ open as a public museum.
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