CB 12, 1980. All members of a two-woman, four-man Japanese expedition from Osaka, led by Yoshitoru Hirotani, made the third ascent of CB 12 (6250 meters, 20,506 feet) on August 13, 1980. Base Camp was at the snout of the Dakka Glacier at 13,950 feet. Camp III was placed at 18,700 feet on the 12th. The next day all members climbed the steep ice of the north face to the summit. (See Iwa To Yuki, N° 81, pages 177-8 and N° 82 page 106.)