Collapsing on Lionhead Ridge

We toured up Lionhead Ridge from Targhee Pass for a nice Xmas day tour.  Was a calm and comfortable day.  Just beyond the first large opening above 8200', I veered off the existing skin track and experienced a sizeable collapse on the NE side of the ridge.  I'd estimate the collapse extended roughly 30 feet in either direction.  I continued along this path and experienced one additional collapse.  Fun day out.  We did manage to find some supportable soft snow on the shadier side of the compass (NE to E aspect) from 8200' down to 7600' for some fun turns.