Wolverine Pass - Cooke City

Rode out to Wolverine Pass on New Years Eve. On approach to  wolverine pass/YNP boundary we found HS 160cm on NE facing slope at 9200'.  Found 3-4mm SH in tact at 110 cm deep. Found 1-2mm FC at 60cm deep. Ectn27 at storm interface layer 60 cm deep. No results on SH layer, but many collapses during the day assumed to be on this layer.  Large D2-3 deep Slab avalanche seen on NW facing slope of Sunset Peak. Picture attached. Generally stable conditions, but big avalanches on N,NE,NW facing slopes are a real concern for sure.