in the stolbovoy grotto on the stone usvinskie pillars western urals, perm territory

100 altitude archeology atmosphere cape cave cavern clouds darkness deep dramatic earth edge entrance entry exit exploration explore fingers formation geological geology grotto history hole hollow idyllic indoor inside interior journey ladies light located majestic meters mineral more national paradise perm perspective pillars planet pool ray relax river rock sacred scenery scenic sink site stolbovoy stone sun sunlight territory than tourist tunnel underground urals usva usvinskie water western wet