P 13,267, Clyde Spires, North Face. A1 Stone and I climbed this route following the left couloir. Follow the main couloir for several hundred feet, then traverse left to a small subsidiary couloir on the left wall of the main couloir, and follow it to the summit ridge exiting between the two spires. The route contains about 600 feet of fine climbing on mixed ground. NCCS III, F7.