South Face of Lone Peak avalanche

South Face of Lone Peak avalanche

The Big Sky Ski Patrol triggered this avalanche on the south face of Lone Peak with minimal explosives. It broke 3-4' deep on facets at the ground and propagated 1200' wide. This instability also exists in the backcountry. Photo: Big Sky Ski Patrol

Advisory Year
Northern Madison, 2016-12-08