Dirgol Zom Ascent and Tragedy. An Italian commercial expedition of 21 climbers led by Gianni Calcagno had as its main objective Tirich Mir West I. To acclimatize, they climbed Dirgol Zom (6878 meters, 22,567 feet). On August 6 the mountain was climbed by a new route, which one we do not know, by Paolo Monte, Ugo Vallardi, Giovanni Boggio and Piero Masseroni, on the 9th by Calcagno and Giustino Crescimbeni and on the 10th by Elio Fontanive, Franco Cattaneo, Mario Zadra, Sergio Magrassi and Tullio Vidoni. On their return to Camp II at 6300 meters, Fontanive suddenly died from a heart attack. They gave up any further climbing plans.