Peaks North of Regal Mountain, Wrangell Mountains. An expedition of the Mountaineering Association of Osaka Prefecture operated in two groups. Group A, which consisted of Yoshihiro Nakai and five other members, landed at Green Hill on the east side of the Nebesna Glacier at 62° N, 142° 55´ W on July 26, ascended the Nebesna and placed Camp III about six miles due north of Regal Mountain. On July 31 they climbed P 10,005, on August 1, P 10,000 and on August 2, P 10,340. Meanwhile the 12-man Group B, led by Shiro Nishimae, ascended from Green Hill a glacier that descends from south to north, just east of the Nebesna. From a high camp up this glacier they had on July 30 already climbed P 10,340, before Group A had done so. This group also climbed P 8516, some four miles east-northeast of P 10,340 on August 3.

Ichiro Yoshizawa, A.A.C. and Japanese Alpine Club