Large natural avalanche on deeper weak layer at Big Sky

From BSSP (11/24): "The Whale on the NSS slid naturally at some point in the past 24 hours,
likely broke into deeper layers, and ran well past the Meeting Trees- estimated D3 slide. There is
weakness in the alpine snowpack on some northerly aspects in the alpine..."

From BSSP (12/4): "[A] team got a better look at the natural avalanche that occurred out there around
Thanksgiving. It was a solid D3.5 and ran full track from the level of the Little Couloir down to the
mature tree line."