Two split boarders out. We were going to go from Robs trailhead to the top of the peak that is 100 Turns in the Canyons resort and lap out the north facing trees. On the ridge at the last saddle before the peak we heard a HUGE whumping. At first I though is was control work at the Canyons it was so loud. We decided that was the signal to go home. We followed that ridge down and to the north and found what we believe to be a remotely triggered slide over 1/4 mile, maybe in a 1/2 mile away. (Is that possible?) We didn't notice it on our way in, and we were looking for any signs of activity.

Forecaster note: It also could have been a natural.