원정 개요

BC 20/04 4800m
ABC 22/04 5700m
C1 24/04 6400m
C2 25/05 6600m
C3 15/05 7400m
C4 16/05 7590m
Smt 25/05 by Biswas, Pemba Chhuti at 6 am [and Phurba Dorchi?]

First summit attempt was on 17 May. Biswas reached about 8350m, but he had to abandon his summit attempt due to the lack of fixed rope in the French Couloirs and on the summit ridge. He descended to C4 and stayed the night there and descended to ABC on 18 May.

On the second summit attempt, Biswas, Pemba Chhuti and Phurba [Dorchi] started from C3 at 6:30 pm on 24 May. No problem during the climb. The ropes were fixed and the weather was good. They stayed for about 15 minutes on the summit and descended to C3, where they arrived at noon.

On 26 May they descended to ABC where they arrived at 1 pm.

Oxygen:
Taken and used from C2 to summit to C2 by Biswas
Taken and used from C4 to summit to C4 by Pemba Chhuti

Sherpas:
Pemba Chhuti, 15/7/1953, Yaphu-9, Makalu Barun