History of caves

Being digged by Romanian Army in 1939 as a bunker, warehouse for ammunition and antiaircraft canons, the caves weren't used during WWII in fights, only under camouflage, then deserted. We requested Romanian MOD to deliver us a disaffected tank or antiaircraft canon to recreate the atmosphere of that era, they replied already, so we're on the waiting list for 2008. Even now, flight lane towards Wien, Zurich, Frankfurt is above the caves.