Cho Oyu | 1991 W Ridge-W Face from S

A USSR expedition to Cho Oyu in 1991 via W Ridge-W Face from S, led by Viatcheslav Skripko. Summit reached on 29th September 1991. 5 members recorded.

Expedition Details

Field	Value
ID	580
Imported	2026-03-06 18:04:49.359634
Expedition ID	CHOY91306
Peak ID	CHOY
Year	1991
Season	3
Host Country	1
Route 1	W Ridge-W Face from S
Route 2	-
Route 3	-
Route 4	-
Nationality	USSR
Leaders	Viatcheslav Skripko
Sponsor	Soviet-Bulgarian Expedition to Cho Oyu
Success 1	True
Success 2	False
Success 3	False
Success 4	False
Ascent 1	94th,95th
Ascent 2	-
Ascent 3	-
Ascent 4	-
Claimed	False
Disputed	False
Countries	Bulgaria
Approach	-
Basecamp Date	1991-09-17
Summit Date	1991-09-29
Summit Time	1715
Summit Days	12
Total Days	0
Termination Date	-
Termination Reason	1
Termination Notes	-
High Point (m)	8188
Traverse	False
Ski	False
Paraglide	False
Camps	3
Fixed Rope (m)	0
Total Members	5
Summit Members	5
Member Deaths	0
Total Hired	0
Summit Hired	0
Hired Deaths	0
No Hired	True
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(17/09,5200m),C1(19/09,5900m),C2(26/09,6600m),C3(28/09,7200m),Smt(29/09,01/10)
Route Notes	BC at below Kangchung's correct site C1 across Nangpa La C2 at same US C2 this autumn. After C2 made, descended for rest at BC. Skripko and his USSR teammates reached summit 5:15 NST and in ascent met descending Americans and slept in American camp at 7500m. Skripko frostbite on all toes probably during night of 29/30 Sept. Skripko certain summit date was 29th since it was day after Mojaev's birthday.
Accidents	Skripko frostbite in toes on both feet but probably will heal
Achievement	-
Agency	Mustang
Commercial Route	True
Standard Route	True
Primary Route	False
Primary Member	False
Primary Reference	False
Primary ID	-
Checksum	2454210
Year	1991
Summit Success	True
O2 Summary	None
Route (lowercase)	w ridge-w face from s

Members

Field	Value
ID	4823
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY91306
Member ID	02
Peak ID	CHOY
Year	1991
Season	3
First Name	Borislav Mihaylov
Last Name	Dimitrov
Sex	M
Age	0
Birth Date	-
Year of Birth	1967
Calculated Age	24
Citizenship	Bulgaria
Status	Climber
Residence	Sofia, Bulgaria
Occupation	Student, hydraulic engineering
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	1991-10-01
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	95
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	2437544
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	borislav mihaylov dimitrov
Year of Birth	1967
Year	1991
Age at Expedition	24
Role	Member

Field	Value
ID	4824
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY91306
Member ID	03
Peak ID	CHOY
Year	1991
Season	3
First Name	Iordanka Ivanova
Last Name	Dimitrova
Sex	F
Age	0
Birth Date	-
Year of Birth	1952
Calculated Age	38
Citizenship	Bulgaria
Status	Climber
Residence	Sofia, Bulgaria
Occupation	Teacher, climbing to children
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	1991-10-01
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	95
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	(1952-1994) Died 23 Oct 1994 on Kangchenjunga from avalanche
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2432341
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	iordanka ivanova dimitrova
Year of Birth	1952
Year	1991
Age at Expedition	39
Role	Member

Field	Value
ID	4825
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY91306
Member ID	04
Peak ID	CHOY
Year	1991
Season	3
First Name	Mikhail
Last Name	Mojaev
Sex	M
Age	0
Birth Date	-
Year of Birth	1958
Calculated Age	33
Citizenship	USSR
Status	Climber
Residence	St. Petersburg (Leningrad), Russia, USSR
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	1991-09-29
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	94
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	2434491
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	mikhail mojaev
Year of Birth	1958
Year	1991
Age at Expedition	33
Role	Member

Field	Value
ID	4826
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY91306
Member ID	05
Peak ID	CHOY
Year	1991
Season	3
First Name	Evgeni
Last Name	Prilepa
Sex	M
Age	0
Birth Date	-
Year of Birth	1955
Calculated Age	36
Citizenship	USSR
Status	Climber
Residence	Dushanbe, Tajikistan, USSR
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	1991-09-29
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	94
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	2433363
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	evgeni prilepa
Year of Birth	1955
Year	1991
Age at Expedition	36
Role	Member

Field	Value
ID	4827
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY91306
Member ID	01
Peak ID	CHOY
Year	1991
Season	3
First Name	Viatcheslav (Slava)
Last Name	Skripko
Sex	M
Age	0
Birth Date	-
Year of Birth	1952
Calculated Age	39
Citizenship	USSR
Status	Leader
Residence	Moscow, USSR
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	1991-09-29
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	94
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	True
Injury Date	1991-09-29
Injury Time	-
Injury Type	3
Injury Height (m)	7500
Death Notes	Frostbitten toes
Member Notes	-
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2432248
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	viatcheslav (slava) skripko
Year of Birth	1952
Year	1991
Age at Expedition	39
Role	Leader

5 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Borislav Mihaylov Dimitrov	M	1967	Bulgaria	Climber	Sofia, Bulgaria	Student, hydraulic engineering	Details Other expeditions
Iordanka Ivanova Dimitrova	F	1952	Bulgaria	Climber	Sofia, Bulgaria	Teacher, climbing to children	Details Other expeditions
Mikhail Mojaev	M	1958	USSR	Climber	St. Petersburg (Leningrad), Russia, USSR	Alpine guide	Details Other expeditions
Evgeni Prilepa	M	1955	USSR	Climber	Dushanbe, Tajikistan, USSR	Alpine guide	Details Other expeditions
Viatcheslav (Slava) Skripko	M	1952	USSR	Leader	Moscow, USSR	Alpine guide	Details Other expeditions

References

Field	Value
ID	2428
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY91306
Reference ID	01
Year	1991
Type	2
Journal	AAJ
Author	Hawley, Elizabeth
Title	-
Publisher	-
Publication Date	1992
Language	-
Citation	66:210 (1992)
Yak 94	-
Notes	-

Field	Value
ID	11393
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY91306
Reference ID	02
Year	1991
Type	5
Journal	-
Author	-
Title	http://publications.americanalpineclub.org/articles/12199221002/Asia-Nepal-Cho-Oyu-West-Side-from-the-South-Ascents-and-Attempts-Post-Monsoon
Publisher	-
Publication Date	-
Language	-
Citation	-
Yak 94	-
Notes	-

2 recorded references.

Expedition ID	Journal	Author	Title	Publisher	Citation	Yak 94
CHOY91306	AAJ	Hawley, Elizabeth	-	-	66:210 (1992)	-
CHOY91306	-	-	http://publications.americanalpineclub.org/articles/12199221002/Asia-Nepal-Cho-Oyu-West-Side-from-the-South-Ascents-and-Attempts-Post-Monsoon	-	-	-