Our group of 3 snowmachined from the Richardson Monument to the Gulkana Bridge, parked the sleds there and skinned to the west up and over the ridgeline into the McCallum Creek bowls. We dug a pit around 5800′ on a N facing slope and found a ~ 12″ pencil hard slab on top of ~ 2-3″ of facets which was on a 4 finger slab down to the bed surface which was facets. The overall snowpack depth was ~ 140 cm. The top slab failed at CT 25 and ECT 25 with no propagation. Many avalanches seen on west and south facing slopes, a couple on east facing slope. East facing slopes are heavily sun affected
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