Annapurna IV | 1991 NW Ridge
A Japan expedition to Annapurna IV in 1991 via NW Ridge, led by Koichi Sugiyama. Summit reached on 5th September 1991. 2 members recorded.
Expedition Details
| Field | Value |
|---|---|
| ID | 54 |
| Imported | 2026-03-06 18:04:49.359634 |
| Expedition ID | ANN491301 |
| Peak ID | ANN4 |
| Year | 1991 |
| Season | 3 |
| Host Country | 1 |
| Route 1 | NW Ridge |
| Route 2 | - |
| Route 3 | - |
| Route 4 | - |
| Nationality | Japan |
| Leaders | Koichi Sugiyama |
| Sponsor | Osaka Annapurna IV Expedition |
| 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 | Marshyangdi->Hongde->Sabje Khola |
| Basecamp Date | 1991-08-27 |
| Summit Date | 1991-09-05 |
| Summit Time | - |
| Summit Days | 9 |
| Total Days | 11 |
| Termination Date | 1991-09-07 |
| Termination Reason | 4 |
| Termination Notes | Abandoned at 6480m due to constant snowfall, lack of fuel and lack of time |
| High Point (m) | 6480 |
| Traverse | False |
| Ski | False |
| Paraglide | False |
| Camps | 1 |
| Fixed Rope (m) | 0 |
| Total Members | 1 |
| Summit Members | 0 |
| Member Deaths | 0 |
| Total Hired | 1 |
| Summit Hired | 0 |
| Hired Deaths | 0 |
| No Hired | False |
| O2 Used | False |
| O2 None | True |
| O2 Climb | False |
| O2 Descent | False |
| O2 Sleep | False |
| O2 Medical | False |
| O2 Taken | False |
| O2 Unknown | False |
| Other Summits | - |
| Campsites | BC(27/08,4550m),C1(03/09,5600m),xxx(05/09,6480m) |
| Route Notes | BC near glacier C1 above rock barrier towards point 6484m on Annapurna Conservative Area Map High point on NW Ridge at point 6484m (C2 site). 1st week at BC one week continuous rainfall. 3rd to 5th Sept only 3 days could climb (because of snow avalanching); carried gear to C2 5th Sept after spending 4th fixing route through icefall to 6400m. Arrived C2 site at 6480m at 3 pm and after discussion decided to leave gear and go down to C1; was alreading snowing. Another problem: now saw many hidden crevasses beyond C2 and must bring up more rope and snow bars. 5th Sept slept in C1. Weather bad on 6th (snowing at C1, raining at BC). Down to BC on 6th and found cooking gas was finished; cut kitchen timbers for firewood for fuel. Since had to be back in KTM on 18th, decided not enough time for climb. Left BC 7th Sept and arrived KTM 13th Sept night. |
| Accidents | None |
| Achievement | - |
| Agency | Cosmo Treks |
| Commercial Route | - |
| Standard Route | - |
| Primary Route | False |
| Primary Member | False |
| Primary Reference | - |
| Primary ID | - |
| Checksum | 2453601 |
| Year | 1991 |
| Summit Success | False |
| O2 Summary | None |
| Route (lowercase) | nw ridge |
Members
2 recorded members.
| Name | Sex | Year of Birth | Citizenship | Status | Residence | Occupation | |
|---|---|---|---|---|---|---|---|
| Koichi Sugiyama | M | 1968 | Japan | Leader | Nishinomiya, Hyogo, Japan | Economics student | Details Other expeditions |
| Kami Tshering Sherpa | M | 1962 | Nepal | Sirdar | - | - | Details Other expeditions |
References
4 recorded references.
| Expedition ID | Journal | Author | Title | Publisher | Citation | Yak 94 |
|---|---|---|---|---|---|---|
| ANN491301 | AAJ | Hawley, Elizabeth | - | - | 66:216 (1992) | - |
| ANN491301 | IWA | - | - | - | :216 (1992) | - |
| ANN491301 | IWA | - | - | - | :64 (1992) | - |
| ANN491301 | - | - | http://publications.americanalpineclub.org/articles/12199221601/Asia-Nepal-Annapurna-IV-Attempts | - | - | - |