New snow was not bonding well to old snow surface yet on NE aspect. Anywhere the slope rolled to ~30ish degrees would fracture pretty cleanly 8-12" deep 10-20 feet wide and run a dense dry slough, up to ~100 feet down slope at a medium pace, leaving a clean/firm bed surface behind. Not enough to bury but would be enough to knock a rider down and shove them into a tree if they became entrained. Easy to manage with terrain selection, but in steeper/bigger terrain I think it could become unmanageable.