More to explore:
Abandoned expansive underground bunker discovery reveals military equipment going back to WWII and the Cold War! Read Article here: defensetech.org/...
An abandoned bunker in the Alps between France and Italy
Underground submarine base, Balaklava, the Crimea, Ukraine-Visitable
Image for Abandoned Nuclear command Bunker, Yorkshire.
Row of toilets in abandoned European bunker
Abandoned Nuclear Submarine Base