Seemed abandoned, but it had electricity and ventilation, so…

While walking through the territory of a factory, located in the industrial area of the city, I noticed a weird concrete block with a metal gate on the side of it. I opened it and a latter climb later I was in a dark, small tunnel leading to an underground bomb shelter/safe house.

Background noise sample:
http;//www.freesound.org (353989__raille__four-444)
S.T.A.L.K.E.R Soundtrack – Approaching Chernobyl