Went to check out Diadem creek. A cool drainage with some great looking skiing in the avalanche paths up the valley. Deep ski pen when skinning through a thin crust, lots of previous roller balling on NW facing slopes, and some on SE. Looks like some of the steep NW aspects had gone through a previous slab avalanche cycle with debris stopping top to middle of the run out, hard to say how long ago but I would assume weeks+ old.