This was the largest slide/crown, but other slabs and sheds likely contributed to the debris pile which almost made it to Source Lake.
Unknown failure plane - could be the 2/13 interface and wind loaded, or maybe a deeper layer. Released at base of the rocks in an obviously wind-loaded area. Suspected Wind Slab triggered by natural cornice fall during the height of the storm on 2/13. Chunks of cornice/hard slab in the debris pile.