metal spiral staircase in liechtensteinklamm or liechtenstein gorge, particularly narrow gorge with walls, located in the austrian

adventure alps austria canyon cascade central clean cliff corridor creek environment europe extreme flow geology gorge hanging helix johann klamm land landscape liechtenstein liechtensteinklamm metal motion mountain mountains natural nature nobody outdoors passage pongau power rock salzburg salzburger salzkammergut scenery stairs stone tourism upper waterfall wilderness