Collapse in Hayden Creek

Our party experienced a sudden collapse while ascending, as we exited the trees above Olie’s Woods and began to cross a a meadow @9600’. The collapse was assumed to be at least 100’ wide, as we saw a small tree shake approx 100’ from the leader and our entire party felt the collapse. We dug a pit and got the following results:

HS 135

ECTP 17; 55cm down.

SP- Q1, Sudden Planar failure, entire block slid into pit

Failed on 2mm facets, 10 cm below an ice crust.