steel trail at rock wall in gorge

access adventurous along alpine alps bavaria balustrade bridge canyon cliff construction couloir creek current deep defile destination ecology engineering europe european explore footbridge forest geotope glacial gorge gulch hike innovative inside landscape leutasch leutaschklamm long metal mittenwald mountain mountainous mountainside narrow nature passage passageway path ravine reserve scenery steel steep stream structure tirol tour tourism tourist touristic track trail travel trip tyrol valley vertiginous walkabout walkway water watercourse waters winding wooded recreational area