![File:Kanchurinsko-Musinsky underground gas storage complex in Bashkortostan, Russia.jpg - Wikimedia Commons File:Kanchurinsko-Musinsky underground gas storage complex in Bashkortostan, Russia.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/b/ba/Kanchurinsko-Musinsky_underground_gas_storage_complex_in_Bashkortostan%2C_Russia.jpg)
File:Kanchurinsko-Musinsky underground gas storage complex in Bashkortostan, Russia.jpg - Wikimedia Commons
Geocaching - Did you know that on the borders of Croatia and Bosnia and Herzegovina there is an underground airport built into a mountain? Although no longer in use for its original,
![Metro Station Park Pobedy-- Moscow Metro, Russia.It Is On Two Lines: Arbatsko-Pokrovskaya And Kalininsko-Solntsevskaya Lines.At 84 Metres Underground-- One Of The Deepest In The World Stock Photo, Picture And Royalty Free Image. Metro Station Park Pobedy-- Moscow Metro, Russia.It Is On Two Lines: Arbatsko-Pokrovskaya And Kalininsko-Solntsevskaya Lines.At 84 Metres Underground-- One Of The Deepest In The World Stock Photo, Picture And Royalty Free Image.](https://us.123rf.com/450wm/vladj55/vladj551803/vladj55180300025/97263665-metro-station-park-pobedy-moscow-metro-russia-it-is-on-two-lines-arbatsko-pokrovskaya-and.jpg)