From Google Maps
Rating: 4.4/5 (10 reviews)
The place is very difficult to access. To get there, you have to drive about 2 km along a bad road. At the end, you'll see an abandoned building; I recommend leaving your car there and walking. Use a GPS. The bunker itself is impressive, of impressive size.
A flashlight is a must.
The place is cool, you can even play hide and seek indoors