HS on the tongue of illiciliwaet consistently 140cm. At the roll over through the crevasses variable from 30-120cm. Quite a few openings, moderate navigating in poor light. Consistent 150cm and up HS heading to the ridge where it is shallow and wind scoured. Dropping down to the Forever Young’s saddle there is a large crevasse/bergschrund that runs across most of the line. It was the crux for us. Crevasses still showing centre left of first step on descent of Young’s peak. Headwall was smooth and wind pressed. Skied to Asulkan cabin for exit