Here is the main runout of the Nature Boy avalanche that occurred in January. Most of the debris spilled across to the low side of the highway, or has been cleared away to there, but you can see some of the bark and smaller stuff in the foreground of this photo.
You can certainly see where the debris came from. The slope has been stripped of trees for some distance up. Some leaners remain near the edge of the swath. They'll likely fall as the snow melts and the spring runoff proceeds.