South West Ridge (Main Divide)

A steep rock climb. From the Classen Glacier, climb a shingle rib west of the Easter Glacier to the foot of a large wall. Climb a rock buttress west of a prominent snow couloir to gain the upper Sustins Glacier and the ridge. The ridge has three steps. The first can be turned on the left and the second on the right, with an exposed traverse on rock dropping straight to the glacier below. The third step involves straightforward scrambling.