Cho Oyu | 2025 NW side

A USA expedition to Cho Oyu in 2025 via NW side, led by David Watson. Summit reached on 1st October 2025. 10 members recorded.

Expedition Details

Change history — how this expedition, its members and references have changed between database releases.

Field	Value
ID	3760
Imported	2026-11-04 22:32:23.994980
Expedition ID	CHOY25303
Peak ID	CHOY
Year	2025
Season	3
Host Country	2
Route 1	NW side
Route 2	-
Route 3	-
Route 4	-
Nationality	USA
Leaders	David Watson
Sponsor	Furtenbach Adventures Cho Oyu Expedition 2025
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	Austria, Germany, Netherlands
Approach	Flight to Lhasa->Shigatse->Tingri->BC
Basecamp Date	2025-09-24
Summit Date	2025-10-01
Summit Time	0900
Summit Days	7
Total Days	9
Termination Date	2025-10-03
Termination Reason	1
Termination Notes	-
High Point (m)	8188
Traverse	False
Ski	False
Paraglide	False
Camps	2
Fixed Rope (m)	0
Total Members	6
Summit Members	4
Member Deaths	0
Total Hired	4
Summit Hired	4
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(24/09),ABC(27/09,5700m),C1(28/09,6499m),C2(30/09,7100m),Smt(01/10)
Route Notes	Langtang trekking to acclimatise, flight to Lhasa on 18/09, Shigatse, Tingri, Arrival Ktm 06/09 Leave Ktm 18/09 flight to Lhasa CBC 24/09 ABC 27/09 5700m C1 28/09 6400m C2 30/09 7100m Smt 01/10 at 11 am Chinese time by Watson, Emma Griffith, Alex Knafl, Cosima Eggenberger, Mingma Dorjee, Nima Tashi and other Sherpas. As the weather window opened earlier than expected, Watson decided to forego the acclimatisation (3 members had acclimatised in Langtang and 2 had used hypoxic tent) and go for the summit before the cyclone. Team left C2 at 1 am together with the large Chinese team. There was a lot of new snow and wind-drift. Sherpas broke trail. Rope fixed by the first Chinese team who summited on 24/09. Straightforward climb. Team spent about 30 minutes on the summit and descended to C2 where they arrived at 4 pm. On 02/10 descent to ABC. Members who did not summit Van der Haagen reached 6000m Taenzler reached C2 and decided that he was not strong enough. Left BC on 03/10 by jeep to Tingri and crossed the border at Kodari. The roads were pretty bad. Arrival 04/10 in Kathmandu Oxygen: from C1 to top to C1 by members; C2 to top to C2 by Sherpas. Clients were on low flow for sleeping from C1. Emma Griffith first transwomen on Cho Oyu.
Accidents	-
Achievement	-
Agency	Iceland Trekking
Commercial Route	True
Standard Route	True
Primary Route	False
Primary Member	False
Primary Reference	False
Primary ID	-
Checksum	2464280
Year	2025
Summit Success	True
O2 Summary	Used
Route (lowercase)	nw side

Members

Field	Value
ID	26735
Imported	2026-11-04 22:32:24.749110
Expedition ID	CHOY25303
Member ID	01
Peak ID	CHOY
Year	2025
Season	3
First Name	David John (Dave)
Last Name	Watson
Sex	M
Age	0
Birth Date	-
Year of Birth	1975
Calculated Age	49
Citizenship	USA
Status	Leader
Residence	White Salmon, Washington
Occupation	Alpine guide
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	False
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	2025-10-01
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0900
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	-
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	2440679
Summit Note 1	0
Summit Note 2	0
Summit Note 3	0
Death Route	0
Name (lowercase)	david john (dave) watson
Year of Birth	1975
Year	2025
Age at Expedition	50
Role	Leader

Field	Value
ID	26736
Imported	2026-11-04 22:32:24.749110
Expedition ID	CHOY25303
Member ID	02
Peak ID	CHOY
Year	2025
Season	3
First Name	Cosima
Last Name	Eggenberger-Huspenina
Sex	F
Age	0
Birth Date	-
Year of Birth	1970
Calculated Age	55
Citizenship	Austria
Status	Climber
Residence	Wiener Neustadt, Lower Austria, Austria
Occupation	Physician (cardiologist)
Leader	False
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	False
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	2025-10-01
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0900
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	-
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	2438524
Summit Note 1	0
Summit Note 2	0
Summit Note 3	0
Death Route	0
Name (lowercase)	cosima eggenberger-huspenina
Year of Birth	1970
Year	2025
Age at Expedition	55
Role	Member

Field	Value
ID	26737
Imported	2026-11-04 22:32:24.749110
Expedition ID	CHOY25303
Member ID	03
Peak ID	CHOY
Year	2025
Season	3
First Name	Emma Madison
Last Name	Griffiths
Sex	F
Age	0
Birth Date	-
Year of Birth	1993
Calculated Age	31
Citizenship	USA
Status	Climber
Residence	Georgia
Occupation	Software engineer
Leader	False
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	False
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	2025-10-01
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0900
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	-
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	2447231
Summit Note 1	0
Summit Note 2	0
Summit Note 3	0
Death Route	0
Name (lowercase)	emma madison griffiths
Year of Birth	1993
Year	2025
Age at Expedition	32
Role	Member

Field	Value
ID	26738
Imported	2026-11-04 22:32:24.749110
Expedition ID	CHOY25303
Member ID	04
Peak ID	CHOY
Year	2025
Season	3
First Name	Alexander
Last Name	Knafl
Sex	M
Age	0
Birth Date	-
Year of Birth	1974
Calculated Age	50
Citizenship	Austria
Status	Climber
Residence	-
Occupation	-
Leader	False
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	False
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	2025-10-01
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0900
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	-
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	2440284
Summit Note 1	0
Summit Note 2	0
Summit Note 3	0
Death Route	0
Name (lowercase)	alexander knafl
Year of Birth	1974
Year	2025
Age at Expedition	51
Role	Member

Field	Value
ID	26739
Imported	2026-11-04 22:32:24.749110
Expedition ID	CHOY25303
Member ID	05
Peak ID	CHOY
Year	2025
Season	3
First Name	Phillip Johannes
Last Name	Taenzler
Sex	M
Age	0
Birth Date	-
Year of Birth	1988
Calculated Age	36
Citizenship	Germany
Status	Climber
Residence	-
Occupation	Software engineer
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	False
High Point (m)	False
Personal High Point (m)	7100
Summit Date 1	2025-09-30
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
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	-
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	3
Summit Term	7
HCN	0
Checksum	2445465
Summit Note 1	0
Summit Note 2	0
Summit Note 3	0
Death Route	0
Name (lowercase)	phillip johannes taenzler
Year of Birth	1988
Year	2025
Age at Expedition	37
Role	Member

Field	Value
ID	26740
Imported	2026-11-04 22:32:24.749110
Expedition ID	CHOY25303
Member ID	06
Peak ID	CHOY
Year	2025
Season	3
First Name	Dennis
Last Name	Van der Haagen
Sex	M
Age	0
Birth Date	-
Year of Birth	1965
Calculated Age	59
Citizenship	Netherlands
Status	Climber
Residence	-
Occupation	Director
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	False
High Point (m)	False
Personal High Point (m)	6000
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
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	1
Summit Term	7
HCN	0
Checksum	2437121
Summit Note 1	0
Summit Note 2	0
Summit Note 3	0
Death Route	0
Name (lowercase)	dennis van der haagen
Year of Birth	1965
Year	2025
Age at Expedition	60
Role	Member

Field	Value
ID	26741
Imported	2026-11-04 22:32:24.749110
Expedition ID	CHOY25303
Member ID	07
Peak ID	CHOY
Year	2025
Season	3
First Name	Lakpa
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	1994
Calculated Age	31
Citizenship	Nepal
Status	H-A Worker
Residence	Makalu-5, Makalu-Barun
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	False
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	2025-10-01
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0900
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	-
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	2447366
Summit Note 1	0
Summit Note 2	0
Summit Note 3	0
Death Route	0
Name (lowercase)	lakpa sherpa
Year of Birth	1994
Year	2025
Age at Expedition	31
Role	Hired

Field	Value
ID	26742
Imported	2026-11-04 22:32:24.749110
Expedition ID	CHOY25303
Member ID	08
Peak ID	CHOY
Year	2025
Season	3
First Name	Mingma Dorchi/Dorje
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	1980
Calculated Age	45
Citizenship	Nepal
Status	H-A Worker
Residence	Tashigaon, Makalu-Barun
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	False
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	2025-10-01
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0900
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	-
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 Cho Oyu
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2442396
Summit Note 1	0
Summit Note 2	0
Summit Note 3	0
Death Route	0
Name (lowercase)	mingma dorchi/dorje sherpa
Year of Birth	1980
Year	2025
Age at Expedition	45
Role	Hired

Field	Value
ID	26743
Imported	2026-11-04 22:32:24.749110
Expedition ID	CHOY25303
Member ID	09
Peak ID	CHOY
Year	2025
Season	3
First Name	Ngima Tashi
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	1999
Calculated Age	26
Citizenship	Nepal
Status	H-A Worker
Residence	Makalu-2, Makalu-Barun
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	False
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	2025-10-01
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0900
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	-
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 Cho Oyu
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2449202
Summit Note 1	0
Summit Note 2	0
Summit Note 3	0
Death Route	0
Name (lowercase)	ngima tashi sherpa
Year of Birth	1999
Year	2025
Age at Expedition	26
Role	Hired

Field	Value
ID	26744
Imported	2026-11-04 22:32:24.749110
Expedition ID	CHOY25303
Member ID	10
Peak ID	CHOY
Year	2025
Season	3
First Name	Nima Dorje (Nima Dorchi)
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	1987
Calculated Age	37
Citizenship	Nepal
Status	H-A Worker
Residence	Makalu-5, Makalu-Barun
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	False
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	2025-10-01
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0900
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	-
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 Cho Oyu
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2444978
Summit Note 1	0
Summit Note 2	0
Summit Note 3	0
Death Route	0
Name (lowercase)	nima dorje (nima dorchi) sherpa
Year of Birth	1987
Year	2025
Age at Expedition	38
Role	Hired

10 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
David John (Dave) Watson	M	1975	USA	Leader	White Salmon, Washington	Alpine guide	Details Other expeditions
Cosima Eggenberger-Huspenina	F	1970	Austria	Climber	Wiener Neustadt, Lower Austria, Austria	Physician (cardiologist)	Details Other expeditions
Emma Madison Griffiths	F	1993	USA	Climber	Georgia	Software engineer	Details Other expeditions
Alexander Knafl	M	1974	Austria	Climber	-	-	Details Other expeditions
Phillip Johannes Taenzler	M	1988	Germany	Climber	-	Software engineer	Details Other expeditions
Dennis Van der Haagen	M	1965	Netherlands	Climber	-	Director	Details Other expeditions
Lakpa Sherpa	M	1994	Nepal	H-A Worker	Makalu-5, Makalu-Barun	-	Details Other expeditions
Mingma Dorchi/Dorje Sherpa	M	1980	Nepal	H-A Worker	Tashigaon, Makalu-Barun	-	Details Other expeditions
Ngima Tashi Sherpa	M	1999	Nepal	H-A Worker	Makalu-2, Makalu-Barun	-	Details Other expeditions
Nima Dorje (Nima Dorchi) Sherpa	M	1987	Nepal	H-A Worker	Makalu-5, Makalu-Barun	-	Details Other expeditions

References

Field	Value
ID	3357
Imported	2026-11-04 22:32:27.711802
Expedition ID	CHOY25303
Reference ID	01
Year	2025
Type	5
Journal	-
Author	-
Title	https://explorersweb.com/cho-oyu-dhaulagiri-summits-as-weather-window-closes/
Publisher	-
Publication Date	-
Language	-
Citation	-
Yak 94	-
Notes	-

1 recorded references.

Expedition ID	Journal	Author	Title	Publisher	Citation	Yak 94
CHOY25303	-	-	https://explorersweb.com/cho-oyu-dhaulagiri-summits-as-weather-window-closes/	-	-	-