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 engineering old exploration metal background wagon heavy coal quarry drift timbering lamp deposit tunneling copper rails entrance mineshaft tunnels mines city sataniv ukraine dangerous moves cracks chasms ukraine moves chasms