The lake dammed by Allalingletscher and its lateral moraine in 1915 which repeatedly caused catastrophic glacier outburst in the Saas valley. From Zryd, A. (2001) Les Glaciers, Editions Pillet, S. 205.
August Gysi (1878-1928), Schwarzegghütte am Fuss des Schreckhorns, Berner Alpen, 1905 (geschätzt)
Grosser Aletschgletscher. The hanging glacier on the south flank of Mönch regularly releases small, and sometimes large ice avalanches which descend on to Jungfraufirn. A particularly large avalanche occured on July 5th, 1982.