This looks to be a natural slide, no new tracks on the most recent snowfall (it melted then froze since then). The crown looks to follow the edge of the small rocky patch to the east then travels west along the trees. There had also been several smaller slides below the main slide in the photos, they had made it onto the road/trail. I did not stick around long enough to check the depth of snow or get into fine details. This is My first report of an avvy so take it with a grain of salt. I was alone testing my sled and I did not wanna mess around too much in the dark.