Rider Triggered Avalanche, Chimney Rock

There was a human-triggered avalanche near Chimney Rock on Henderson Mountain. The avalanche failed on weak snow near the ground. We believe a snowmobiler triggered the slope.

From GNFAC visit to crown 12/8: "We rode to Daisy Pass to look at the avalanche that was triggered by a snowmobiler two days ago (12/6/22). It was on the slope east of the pass that people often climb up and out, steeper than the normal route out. It broke 2-3 feet deep and 250-300’ wide, R2-D2. At the crown it broke on a weak layer about 100cm above the ground, but it broke closer to the ground in many places lower on the slope where the snowpack was shallower and weaker. I would guess one of those areas is where it was triggered from."