Natural Avalanche Sage Basin

A cornice collapse in Sage Basin triggered an avalanche on a wind-loaded slope. The avalanche broke down to an old layer of buried surface hoar at 150 cm height (total snow height - 255 cm). The average depth is difficult to discern because the crown abuts the cornice line. The avalanche depth as stated was measured in the flank in a snowpit profile. Avalanche width and vertical run are estimated using photographs and Google Earth.