London ridge surface hoar

Skier accidental size 2.5-3 on london ridge. Mostly a 15 cm storm slab, a bit cross-loaded in the immediate lee up to 30 cm, 20 m wide crown. Storm snow was sitting on January 19th surface hoar. Very sensitive to human trigger, good propagation. Widespread reactivity around 2000 m elevation ban. Lots of cracking.