Walking along the ridge on Davenport hill, a large cornice, VW bug size broke under my right foot, I managed to step off, and it fell onto the slope and triggered a dense eight inch deep, 40' wide wind slab and ran the slope about 450 ft. I was aware that this was a likely place for a cornice to break off, yet it broke further back than expected. At the time, the wind was transporting snow on the No. slope, later in the day, on the south and east slopes. Also heard collapsing within the new snow (about 3'') under human weight, and also naturally from rapid loading on an east facing slope in Days fork near/on the ridges.