Cho Oyu | 1999 NW side

A France expedition to Cho Oyu in 1999 via NW side, led by Bernard Muller. Summit reached on 27th September 1999. 9 members recorded.

Expedition Details

Field	Value
ID	3420
Imported	2026-03-06 18:04:49.359634
Expedition ID	CHOY99307
Peak ID	CHOY
Year	1999
Season	3
Host Country	2
Route 1	NW side
Route 2	-
Route 3	-
Route 4	-
Nationality	France
Leaders	Bernard Muller
Sponsor	Stages and Expeditions French Cho Oyu Expedition
Success 1	True
Success 2	False
Success 3	False
Success 4	False
Ascent 1	343 w/UK,USA, 344
Ascent 2	-
Ascent 3	-
Ascent 4	-
Claimed	False
Disputed	False
Countries	Switzerland
Approach	-
Basecamp Date	1999-09-07
Summit Date	1999-09-27
Summit Time	0900
Summit Days	20
Total Days	26
Termination Date	1999-10-03
Termination Reason	1
Termination Notes	-
High Point (m)	8188
Traverse	False
Ski	False
Paraglide	False
Camps	2
Fixed Rope (m)	0
Total Members	8
Summit Members	6
Member Deaths	0
Total Hired	2
Summit Hired	1
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(07/09,4900m),ABC(09/09,5700m),C1(13/09,6400m),C2(26/09,7100m),Smt(27-28/09)
Route Notes	27th summit party left C2 at midnight (NST) and returned C2; on top 9:00 am 27th, saw Everest for few minutes. 28th also left camp at midnight, on top 2:00 pm because much snow during night and back to C2 at 6:30 pm. Pemba is Nawang Thile, 1950, Beding, Cho Oyu X6, Everest X2, K2
Accidents	Ducros 7850m blind on 28th and down; slight frostbite
Achievement	-
Agency	Thamserku Trekking
Commercial Route	True
Standard Route	True
Primary Route	False
Primary Member	False
Primary Reference	-
Primary ID	-
Checksum	2457228
Year	1999
Summit Success	True
O2 Summary	None
Route (lowercase)	nw side

Members

Field	Value
ID	25513
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY99307
Member ID	02
Peak ID	CHOY
Year	1999
Season	3
First Name	Antoine
Last Name	De Choudens
Sex	M
Age	0
Birth Date	-
Year of Birth	1969
Calculated Age	30
Citizenship	France
Status	Climber
Residence	Grenoble, Isere, France
Occupation	Alpine guide
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	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	1999-09-27
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	343
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	5
Summit Term	1
HCN	0
Checksum	2438210
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	antoine de choudens
Year of Birth	1969
Year	1999
Age at Expedition	30
Role	Member

Field	Value
ID	25514
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY99307
Member ID	03
Peak ID	CHOY
Year	1999
Season	3
First Name	Sandrine Marie Rose
Last Name	De Choudens
Sex	F
Age	0
Birth Date	-
Year of Birth	1971
Calculated Age	28
Citizenship	France
Status	Climber
Residence	Grenoble, Isere, France
Occupation	Biology researcher
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	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	1999-09-27
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	343
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	aka Sandrine Ollagnier-De Choudens
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2439026
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	sandrine marie rose de choudens
Year of Birth	1971
Year	1999
Age at Expedition	28
Role	Member

Field	Value
ID	25515
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY99307
Member ID	04
Peak ID	CHOY
Year	1999
Season	3
First Name	Martin
Last Name	Ducros
Sex	M
Age	0
Birth Date	-
Year of Birth	1969
Calculated Age	30
Citizenship	France
Status	Climber
Residence	Toulouse, Haute-Garonne, France
Occupation	Movie 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	-
High Point (m)	False
Personal High Point (m)	7850
Summit Date 1	1999-09-28
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	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	4
Summit Term	8
HCN	0
Checksum	2438245
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	martin ducros
Year of Birth	1969
Year	1999
Age at Expedition	30
Role	Member

Field	Value
ID	25516
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY99307
Member ID	05
Peak ID	CHOY
Year	1999
Season	3
First Name	Steeve
Last Name	Juvet
Sex	M
Age	0
Birth Date	-
Year of Birth	1972
Calculated Age	26
Citizenship	Switzerland
Status	Climber
Residence	Vouvry, Valais, Switzerland
Occupation	Technician
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	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	1999-09-27
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	343
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	5
Summit Term	1
HCN	0
Checksum	2439464
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	steeve juvet
Year of Birth	1972
Year	1999
Age at Expedition	27
Role	Member

Field	Value
ID	25517
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY99307
Member ID	06
Peak ID	CHOY
Year	1999
Season	3
First Name	Jacques Philippe
Last Name	Marmet
Sex	M
Age	0
Birth Date	-
Year of Birth	1956
Calculated Age	43
Citizenship	France
Status	Climber
Residence	Strasbourg, Bas-Rhin, France
Occupation	Optician
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	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	1999-09-28
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1400
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	344
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	5
Summit Term	1
HCN	0
Checksum	2433337
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	jacques philippe marmet
Year of Birth	1956
Year	1999
Age at Expedition	43
Role	Member

Field	Value
ID	25518
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY99307
Member ID	07
Peak ID	CHOY
Year	1999
Season	3
First Name	Christophe
Last Name	Mirmand
Sex	M
Age	0
Birth Date	-
Year of Birth	1961
Calculated Age	38
Citizenship	France
Status	Climber
Residence	Paris, France
Occupation	Civil servant
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	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	1999-09-27
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	343
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	5
Summit Term	1
HCN	0
Checksum	2435356
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	christophe mirmand
Year of Birth	1961
Year	1999
Age at Expedition	38
Role	Member

Field	Value
ID	25519
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY99307
Member ID	01
Peak ID	CHOY
Year	1999
Season	3
First Name	Bernard Roger
Last Name	Muller
Sex	M
Age	0
Birth Date	-
Year of Birth	1952
Calculated Age	47
Citizenship	France
Status	Leader
Residence	Chamonix, Haute-Savoie, France
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	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	1999-09-28
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1400
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	344
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	5
Summit Term	1
HCN	0
Checksum	2431972
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	bernard roger muller
Year of Birth	1952
Year	1999
Age at Expedition	47
Role	Leader

Field	Value
ID	25520
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY99307
Member ID	08
Peak ID	CHOY
Year	1999
Season	3
First Name	Florence
Last Name	Odin
Sex	F
Age	0
Birth Date	-
Year of Birth	1966
Calculated Age	33
Citizenship	France
Status	Climber
Residence	Paris, France
Occupation	Teacher
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	-
High Point (m)	False
Personal High Point (m)	0
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	0
Summit Term	0
HCN	0
Checksum	2437173
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	florence odin
Year of Birth	1966
Year	1999
Age at Expedition	33
Role	Member

Field	Value
ID	25521
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY99307
Member ID	09
Peak ID	CHOY
Year	1999
Season	3
First Name	Nawang Thile (Pemba Dorje)
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	1953
Calculated Age	46
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)	8188
Summit Date 1	1999-09-27
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	343
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	aka Ang Nawang; 7th ascent of Cho Oyu
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2432286
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	nawang thile (pemba dorje) sherpa
Year of Birth	1953
Year	1999
Age at Expedition	46
Role	Hired

9 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Antoine De Choudens	M	1969	France	Climber	Grenoble, Isere, France	Alpine guide	Details Other expeditions
Sandrine Marie Rose De Choudens	F	1971	France	Climber	Grenoble, Isere, France	Biology researcher	Details Other expeditions
Martin Ducros	M	1969	France	Climber	Toulouse, Haute-Garonne, France	Movie director	Details Other expeditions
Steeve Juvet	M	1972	Switzerland	Climber	Vouvry, Valais, Switzerland	Technician	Details Other expeditions
Jacques Philippe Marmet	M	1956	France	Climber	Strasbourg, Bas-Rhin, France	Optician	Details Other expeditions
Christophe Mirmand	M	1961	France	Climber	Paris, France	Civil servant	Details Other expeditions
Bernard Roger Muller	M	1952	France	Leader	Chamonix, Haute-Savoie, France	Alpine guide	Details Other expeditions
Florence Odin	F	1966	France	Climber	Paris, France	Teacher	Details Other expeditions
Nawang Thile (Pemba Dorje) Sherpa	M	1953	Nepal	H-A Worker	Beding, Dolakha	-	Details Other expeditions

References

Field	Value
ID	5374
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY99307
Reference ID	01
Year	1999
Type	3
Journal	HIGH
Author	-
Title	-
Publisher	-
Publication Date	2000
Language	-
Citation	212:65 (Jul 2000)
Yak 94	-
Notes	-

1 recorded references.

Expedition ID	Journal	Author	Title	Publisher	Citation	Yak 94
CHOY99307	HIGH	-	-	-	212:65 (Jul 2000)	-