 This originates in a vast snow-basin south-east of the Tödi, bounded to the south by the peaks of Stoc Grond, Piz Urlaun and Bifertenstock, forming the boundary of the two cantons.The last-named peak is connected with the Selbsanft by a massive wall of precipitous rocks enclosing the glacier on the east side, and forcing it, after descending at first nearly due east, to bend round first to north-east, and then due north.On the opposite side a ridge of rocks called Bifertengrätli, descending north-east from the Tödi, forms the boundary of the Biferten Glacier.