This narrow gorge below the Rosenlaui Glacier is part of the Swiss Alps Jungfrau-Aletsch UNESCO World Heritage Site Here, a secured 573 m long path with several tunnels and a height difference of 155 m has been blasted into the rock. It will take you past mighty waterfalls, romantic grottos and bizarre rock formations. You can only walk through the gorge upwards. On the way back to the starting point, you will walk through a pristine mountain forest.