Okay, so, really not an avalanche, but still super interesting. This is a glide crack. I've never seen one here before, but, its presence makes sense; we've got a pretty homogenous snowpack and the terrain underlying the 'pack here is a rock slab. Best to give this thing a wide berth. it's pretty difficult to say when this thing will continue down hill. Might be the next warming spell, might be June. The point is, we just don't know.