Kang Bum. Japanese climbers placed their Base Camp south of this mountain at 4590 meters on October 18 and Camp I at 4850 meters two days later. On October 23 leader Nagahisa Sugawara, Yasuo Nagai and Tetsumi Yajima reached the summit, followed on October 25 by Sugawara again with To- shimitsu Sugawara, Seiichi Ueda, Jun Yoshino, Shuichi Kobayashi and two Bhutanese.