This natural bridge belongs to the most spectacular geological outcrops of the thrust. The Niderenbach brook, on its way to the Legler hut (1820m), gouged its underground course in the younger, lower-lying, schistose, soft flysch rock. The much older Verrucano (top) has now been much eroded and only remains visible to the left and right of the "Chärpfbrücke". At low water, you can walk along the 50m-long, 3m-high underground watercourse (at your own risk!).
The careful planning of a tour will ensure that you also derive the maximum pleasure and enjoyment from it. Please take the time to contact the local information centre and enquire about route and weather conditions before setting off. Your intended trail may be fully or partially closed, depending on the time of year and weather conditions.