Everest | 1991 S Col-SE Ridge

A Japan expedition to Everest in 1991 via S Col-SE Ridge, led by Yasuo Iwazoe. Summit reached on 5th October 1991. 10 members recorded.

Expedition Details

Field Value
ID 606
Imported 2026-03-06 18:04:49.359634
Expedition ID EVER91309
Peak ID EVER
Year 1991
Season 3
Host Country 1
Route 1 S Col-SE Ridge
Route 2 -
Route 3 -
Route 4 -
Nationality Japan
Leaders Yasuo Iwazoe
Sponsor G-Tohan (Ascent) Club Everest Expedition 1991
Success 1 False
Success 2 False
Success 3 False
Success 4 False
Ascent 1 -
Ascent 2 -
Ascent 3 -
Ascent 4 -
Claimed False
Disputed False
Countries -
Approach -
Basecamp Date 1991-09-11
Summit Date 1991-10-05
Summit Time -
Summit Days 24
Total Days 31
Termination Date 1991-10-12
Termination Reason 8
Termination Notes Abandoned at 8750m due to oxygen finished and C4 tent broken by wind
High Point (m) 8750
Traverse False
Ski False
Paraglide False
Camps 4
Fixed Rope (m) 0
Total Members 8
Summit Members 0
Member Deaths 0
Total Hired 6
Summit Hired 0
Hired Deaths 0
No Hired False
O2 Used True
O2 None False
O2 Climb True
O2 Descent False
O2 Sleep False
O2 Medical False
O2 Taken False
O2 Unknown False
Other Summits -
Campsites BC(11/09,5350m),C1(14/09,6100m),C2(16/09,6400m),C3(21/09,7300m),C4(30/09,7900m),xxx(05/10,8750m)
Route Notes C2 in Western Cwm C3 on Lhotse Face C4 at South Col High point at South Summit. 30th Sept Sherpas pitched C4 but camp not slept in till 1st Oct. Sherpas go very quickly but Japanese members very slow. 1st summit attack from col 1/2 Oct and Nakajima reached 8500m, Iwazoe to 8250m and Sherpas Phinzo and Nawang Choklang to 8500m. Iwazoe back because carrying 2 oxygen bottles and they were very heavy; other turned back because snow very soft and deep (at 8500m at 3 am) and sirdar said when sun comes avalanches will start. 2nd summit attack from C4 on 5 Oct by Ono and Phinzo: started 6:30 am, reached S Summit 2 pm, then down because oxygen finished. No more attacks; 3rd attack for summit planned but when Sherpas reached C4, they found tent broken by winds. All members reached C3. Left BC 12 Oct.
Accidents None
Achievement -
Agency Cosmo Treks
Commercial Route True
Standard Route True
Primary Route False
Primary Member False
Primary Reference -
Primary ID -
Checksum 2450706
Year 1991
Summit Success False
O2 Summary Used
Route (lowercase) s col-se ridge

Members

10 recorded members.

Name Sex Year of Birth Citizenship Status Residence Occupation
Fumiaki Hayakawa M 1964 Japan Climber Tokyo, Japan Civil servant Details Other expeditions
Yasuo Iwazoe M 1947 Japan Leader Tokyo, Japan President, shoe sales company Details Other expeditions
Keisuke Kawamura M 1959 Japan Climber Tokyo, Japan Coffee shop manager Details Other expeditions
Akira Nakajima M 1962 Japan Climber Tokyo, Japan Engineer Details Other expeditions
Shozo Ono M 1964 Japan Climber Machida, Tokyo, Japan Chemical engineer Details Other expeditions
Aogu Sumikawa M 1949 Japan Climber Tokyo, Japan Air-conditioning engineer Details Other expeditions
Masayuki Suzuki M 1949 Japan Climber Tokyo, Japan Civil servant Details Other expeditions
Ryoji Yamada M 1963 Japan Climber Yokohama, Japan Computer engineer Details Other expeditions
Nawang Choklang Sherpa M - Nepal Sirdar - - Details Other expeditions
Phinzo Sherpa M - Nepal H-A Worker - - Details Other expeditions

References

4 recorded references.

Expedition ID Journal Author Title Publisher Citation Yak 94
EVER91309 AAJ Hawley, Elizabeth - - 66:205 (1992) -
EVER91309 IWA - - - :215 (1992) -
EVER91309 IWA - - - :55 (1992) -
EVER91309 - - http://publications.americanalpineclub.org/articles/12199220502/Asia-Nepal-Everest-South-Col-Post-Monsoon-Attempts - - -