Diran, Ascent and Attempts. Diran (7257 meters, 23,810 feet) was attempted by six expeditions in 1994. All, except for an expedition of 10 Koreans led by Mun Hwan-Choi, failed to reach the summit. These included 8 Swiss led by Martin Bernhard Fischer, 6 Japanese led by Hideki Nakayama, 8 Japanese led by Osami Kunii, 8 Canadians led by Barry Blanchard and 8 Spaniards led by Jaime Alonso. The Spanish Catalans reached 5400 meters on the north ridge.