Cayambe and El Obispo, North Face, 1984. The French Alpine Club’s journal La Montagne reports that on January 10, 1984 Frenchmen H. Ayasse and P. Chevalier ascended the north side of Cayambe (5789 meters, 18,993 feet) on skis. Another Frenchman, G. de Lataillade, with Ecuadorian O. Morales, on January 1, 1984 climbed the 800-meter-high north face of El Obispo (5319 meters, 17,450 feet), the highest peak in the Altar massif. The snow and rock were of poor quality. They fixed the first 150 meters and failed in their first two attempts. When they finally completed the new route, they had made four bivouacs.