Everest | 2007 N Col-NE Ridge
A Japan expedition to Everest in 2007 via N Col-NE Ridge, led by Jun Yasumura. Summit reached on 15th May 2007. 6 members recorded.
Expedition Details
| Field | Value |
|---|---|
| ID | 5632 |
| Imported | 2026-03-06 18:04:49.359634 |
| Expedition ID | EVER07105 |
| Peak ID | EVER |
| Year | 2007 |
| Season | 1 |
| Host Country | 2 |
| Route 1 | N Col-NE Ridge |
| Route 2 | - |
| Route 3 | - |
| Route 4 | - |
| Nationality | Japan |
| Leaders | Jun Yasumura |
| Sponsor | Mountain Gorilla Everest Expedition |
| Success 1 | True |
| 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 | 2007-04-14 |
| Summit Date | 2007-05-15 |
| Summit Time | 0600 |
| Summit Days | 31 |
| Total Days | 36 |
| Termination Date | 2007-05-20 |
| Termination Reason | 1 |
| Termination Notes | - |
| High Point (m) | 8849 |
| Traverse | False |
| Ski | False |
| Paraglide | False |
| Camps | 3 |
| Fixed Rope (m) | 0 |
| Total Members | 4 |
| Summit Members | 1 |
| Member Deaths | 0 |
| Total Hired | 4 |
| Summit Hired | 2 |
| Hired Deaths | 0 |
| No Hired | False |
| O2 Used | True |
| O2 None | False |
| O2 Climb | True |
| O2 Descent | False |
| O2 Sleep | True |
| O2 Medical | True |
| O2 Taken | False |
| O2 Unknown | False |
| Other Summits | - |
| Campsites | BC(14/04),ABC(02/04,6400m),C1(12/05,7000m),C2(13/05,7600m),C3(14/05,8200m),Smt(15/05) |
| Route Notes | ABC at highest ABC C1 at North Col. From C3 at 11:00 pm (NST) were Tuboi, Dawa Chhiri and Danuru Sherpas; Tuboi and Dawa Chhiri on top at 6:00 am and Danuru (carrying extra oxygen bottles) at 6:10 am; down to ABC same day at 6:00 pm. Tuboi was "very tired." Miss Miwako Hashikawa went to C2 on 13 May in summit party, but she developed pulmonary edema, could no longer climb up the mountain nor descend alone. Yasumura put her on oxygen and took her down to ABC on 14 May. Sadao Hoshiko reached 6000m but his blood pressure became very high; he left expedition on 24 April. Oxygen: Hashikawa given it when she got altitude sickness. Summiters Tuboi, Dawa Tshering and Danuru used oxygen in C3 to summit to, but not in C3. Sherpa summiters: Dawa Tshering (Dawa Chhiri) Sherpa, 19/11/66, Thami, Cho Oyu X3, Everest X7 Danuru Sherpa, 10/4/73, Namche, Cho Oyu X4 |
| Accidents | Hashikawa altitude sickness; Hoshiko hypertension |
| Achievement | - |
| Agency | Rolwaling Trek |
| Commercial Route | True |
| Standard Route | True |
| Primary Route | False |
| Primary Member | False |
| Primary Reference | False |
| Primary ID | - |
| Checksum | 2460473 |
| Year | 2007 |
| Summit Success | True |
| O2 Summary | Used |
| Route (lowercase) | n col-ne ridge |
Members
6 recorded members.
| Name | Sex | Year of Birth | Citizenship | Status | Residence | Occupation | |
|---|---|---|---|---|---|---|---|
| Jun Yasumura | M | 1946 | Japan | Leader | Tokyo, Japan | Alpine guide | Details Other expeditions |
| Miwako Hashikawa | F | 1964 | Japan | Climber | Tokyo, Japan | Salesman in share marketing company | Details Other expeditions |
| Sadao Hoshiko | M | 1931 | Japan | Climber | Oita, Japan | Retired machine designer | Details Other expeditions |
| Izumi Tuboi | M | 1969 | Japan | Climber | Yokohama, Japan | Automobile test driver | Details Other expeditions |
| Dawa Tshering (Dawa Chhiri) Sherpa | M | 1966 | Nepal | H-A Worker | Thami, Khumbu | - | Details Other expeditions |
| Danuru (Dawa) Sherpa | M | 1973 | Nepal | H-A Worker | Namche Bazar, Khumbu | - | Details Other expeditions |
References
0 recorded references.