![South Face of Lone Peak avalanche South Face of Lone Peak avalanche](/sites/default/files/images/Wave.jpg)
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
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