Big Sky Ski Patrol

Pit dug 200 feet below Bobs Rock in refill of 12/9/20 avalanche. Old bed surface is the 60-48 cm layer.

Pit dug in the refill of Lenin avalanche on 12/15/20. 25-22 cm was bed surface of that slide.

Darker color in snow layers at the two ECTP failure points possibly failing on previous high pressure / wind event surface

On the same day, Hanging Valley ran HS-AB-O-R3-D3

Pit was dug in Castro's face left side down by the horizontal point of rocks. The rocks on the bottom of the pack stick up through the ice crusts, perhaps adding to the stabiity?