The thing to note here is the buried surface hoar at the top. Under about 1-2cm of new snow large intact surface that seemed to be preserved from last nights small amount of snow. It seemed to exist in multiple places in the area that we where, not just this one spot. This was a semi sheltered treed area near treeline. Due to the mild weather with snow I wouldn't be surprised if this existed in other similar areas at and below tree line.

Photos below:

1) Hand pit around 9500' on a NW aspects, a small slab exists in the middle with weak above and below.

2) Hand pit facing West around 9100'. Crust on top with weak snow underneath with another crust below.

3) Basal facets

4) The rest are of buried surface hoar