two tunnels, old abandoned quarry mines near the city of sataniv, ukraine. dangerous moves. cracks and chasms

tunnel underground mineral cavern dark stone cave geology industrial passage shaft industry iron deep abandoned gold gallery corridor mining interior inside rock path ore mystery light dirty underpass wood black wagon metal copper rails drift engineering coal deposit lamp background exploration timbering mineshaft old tunneling heavy entrance quarry two tunnels mines city sataniv ukraine dangerous moves cracks chasms ukraine moves chasms