Oh man that place is awesome. I'd love to explore that.
I'm in Tbilisi now and it's said there are about 500 hidden nuclear bunkers in the city alone. I've managed to find one of them so far. Going to explore it soon.
These bunkers aren't used for anything, there are no tours. They're intentionally kept secret for some reason. So if you find the location of one, it's either with a ton of noticing those "nothing to see here" ventilation shafts, or stumbling across with some deep searching
500? strange!