Everest | 2007 N Col-NE Ridge

A Japan expedition to Everest in 2007 via N Col-NE Ridge, led by Koichi Oyama. Summit reached on 15th May 2007. 3 members recorded.

Expedition Details

Field	Value
ID	5633
Imported	2026-03-06 18:04:49.359634
Expedition ID	EVER07106
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	Koichi Oyama
Sponsor	Oyama Koichi Chomolongma Expedition 2007
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	Zhangmu->Nyalam->Tingri->BC
Basecamp Date	2007-04-23
Summit Date	2007-05-15
Summit Time	0538
Summit Days	22
Total Days	27
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	1
Summit Members	1
Member Deaths	0
Total Hired	2
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	False
O2 Taken	False
O2 Unknown	False
Other Summits	-
Campsites	BC(23/04,5180m),ABC(29/04,6350m),C1(02/05,7000m),C2(13/05,7700m),C3(14/05,8300m),Smt(15/05)
Route Notes	Oyama, Nima Gyalzen and Pemba Gyalzen Sherpa left C3 at 21:20 hours of 14 May, summited at 05:38 hours (NST) on 15 May, stayed at summit about 15 minutes, descended to C3 at 09:00 hours. Rested there for an hour then went down to ABC at 18:00 hours. No clouds, no wind, but cold; while descending in the afternoon it was windy and cloudy. Ahead of them on the summit there was one Sherpa? On that day may be 30 people summited. Among them were Okura team, Ken Noguchi and others. The team returned to Kathmandu on 21 May and will leave on 23 May. Next spring may come for Cho Oyu. Sherpas: Pemba Gyalzen Sherpa, 27/3/1972, Beding, Dolakha, Everest 2000 May Japan and 2005 Indian Army, Xixa X2 Nima Gyalzen Sherpa, 9/8/1985, Beding, Everest 2005 Indian Army
Accidents	-
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

Field	Value
ID	42167
Imported	2026-03-06 18:06:05.675609
Expedition ID	EVER07106
Member ID	01
Peak ID	EVER
Year	2007
Season	1
First Name	Koichi
Last Name	Oyama
Sex	M
Age	0
Birth Date	-
Year of Birth	1948
Calculated Age	58
Citizenship	Japan
Status	Leader
Residence	Higashimatsuyama, Saitama, Japan
Occupation	Office worker
Leader	True
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8849
Summit Date 1	2007-05-15
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0538
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	True
O2 Medical	False
O2 Notes	C1 to smt to C1, sleep in C1
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2430805
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	koichi oyama
Year of Birth	1948
Year	2007
Age at Expedition	59
Role	Leader

Field	Value
ID	42168
Imported	2026-03-06 18:06:05.675609
Expedition ID	EVER07106
Member ID	02
Peak ID	EVER
Year	2007
Season	1
First Name	Nima Gyalzen
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	1985
Calculated Age	21
Citizenship	Nepal
Status	H-A Worker
Residence	Beding, Dolakha
Occupation	-
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	True
Sherpa	True
Tibetan	False
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8849
Summit Date 1	2007-05-15
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0538
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	C3 to smt to C3
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	2nd ascent of Everest; brother of Pemba Dorje
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2444160
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	nima gyalzen sherpa
Year of Birth	1985
Year	2007
Age at Expedition	22
Role	Hired

Field	Value
ID	42169
Imported	2026-03-06 18:06:05.675609
Expedition ID	EVER07106
Member ID	03
Peak ID	EVER
Year	2007
Season	1
First Name	Pemba Gyalzen
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	1972
Calculated Age	35
Citizenship	Nepal
Status	H-A Worker
Residence	Beding, Dolakha
Occupation	-
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	True
Sherpa	True
Tibetan	False
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8849
Summit Date 1	2007-05-15
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0538
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	C3 to smt to C3
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	3rd ascent of Everest
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2439280
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	pemba gyalzen sherpa
Year of Birth	1972
Year	2007
Age at Expedition	35
Role	Hired

3 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Koichi Oyama	M	1948	Japan	Leader	Higashimatsuyama, Saitama, Japan	Office worker	Details Other expeditions
Nima Gyalzen Sherpa	M	1985	Nepal	H-A Worker	Beding, Dolakha	-	Details Other expeditions
Pemba Gyalzen Sherpa	M	1972	Nepal	H-A Worker	Beding, Dolakha	-	Details Other expeditions

References

0 recorded references.