extreme travel. incredible cold war era building. 60 meter underground shelter. the largest secret facility of the ussr

1180 abandoned adrenaline apocalypse armageddon army atomic base biohazard bomb bunker communist conditioning danger decay digger dirty disaster doomsday empty entry europe extreme fear floors forbidden history legend man metal military moldova mystery nuclear olishkany protection radiation rust scary secret shelter soviet stalinism stalker strike top travel ussr wreck