Skinning around the east side of Shingle Peak, we noticed a pretty deep avalanche up above us. Hard to get a good look at it being so far away and through the trees, but it appeared to have failed into the weak facets below the slab. Looked very well connected and stretched north to south for a good portion of the east slope. We saw it on the 29th, but I'm guessing it slid a few days before that.