Snowdome, Northeast Buttress. On August 18 and 19 Don Vockeroth and I made the first ascent of this buttress, which is the one visible from the highway looking up Dome Glacier. The climb on mostly rotten rock required one and a half days. In addition to rock-climbing equipment, an ice axe, several ice screws, and crampons were used to ascend a 150-foot ice cliff near the top. NCCS, IV, F7, A2.