Urkinmang | 1974 SW Ridge

A USA expedition to Urkinmang in 1974 via SW Ridge, led by Bill Roos. Summit reached on 18th November 1974. 7 members recorded.

Expedition Details

Field	Value
ID	3076
Imported	2026-03-06 18:04:49.359634
Expedition ID	URKM74301
Peak ID	URKM
Year	1974
Season	3
Host Country	1
Route 1	SW Ridge
Route 2	-
Route 3	-
Route 4	-
Nationality	USA
Leaders	Bill Roos
Sponsor	-
Success 1	True
Success 2	False
Success 3	False
Success 4	False
Ascent 1	4th
Ascent 2	-
Ascent 3	-
Ascent 4	-
Claimed	False
Disputed	False
Countries	-
Approach	-
Basecamp Date	-
Summit Date	1974-11-18
Summit Time	-
Summit Days	0
Total Days	0
Termination Date	-
Termination Reason	1
Termination Notes	-
High Point (m)	6143
Traverse	False
Ski	False
Paraglide	False
Camps	1
Fixed Rope (m)	0
Total Members	7
Summit Members	4
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,C1(5800m),Smt(18/11)
Route Notes	-
Accidents	-
Achievement	-
Agency	-
Commercial Route	-
Standard Route	-
Primary Route	False
Primary Member	False
Primary Reference	-
Primary ID	-
Checksum	2446054
Year	1974
Summit Success	True
O2 Summary	None
Route (lowercase)	sw ridge

Members

Field	Value
ID	23343
Imported	2026-03-06 18:06:05.675609
Expedition ID	URKM74301
Member ID	01
Peak ID	URKM
Year	1974
Season	3
First Name	William A. (Bill)
Last Name	Roos
Sex	M
Age	0
Birth Date	-
Year of Birth	1948
Calculated Age	26
Citizenship	USA
Status	Leader
Residence	Eldorado Springs, Colorado
Occupation	Carpenter, mountaineering-equip designer, technical consultant
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)	6143
Summit Date 1	1974-11-18
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	4
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	2430666
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	william a. (bill) roos
Year of Birth	1948
Year	1974
Age at Expedition	26
Role	Leader

Field	Value
ID	23344
Imported	2026-03-06 18:06:05.675609
Expedition ID	URKM74301
Member ID	07
Peak ID	URKM
Year	1974
Season	3
First Name	Matthew (Matt)
Last Name	Wells
Sex	M
Age	0
Birth Date	-
Year of Birth	1946
Calculated Age	28
Citizenship	USA
Status	Climber
Residence	Hailey, Idaho
Occupation	Ski patrolman, alpine instructor, high school teacher
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)	6143
Summit Date 1	1974-11-18
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	4
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	2429970
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	matthew (matt) wells
Year of Birth	1946
Year	1974
Age at Expedition	28
Role	Member

Field	Value
ID	23345
Imported	2026-03-06 18:06:05.675609
Expedition ID	URKM74301
Member ID	05
Peak ID	URKM
Year	1974
Season	3
First Name	Larry
Last Name	Derby
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	0
Citizenship	USA
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	-
High Point (m)	True
Personal High Point (m)	6143
Summit Date 1	1974-11-18
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	4
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	-86
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	larry derby
Year of Birth	-
Year	1974
Age at Expedition	-
Role	Member

Field	Value
ID	26913
Imported	2026-03-06 18:06:05.675609
Expedition ID	URKM74301
Member ID	06
Peak ID	URKM
Year	1974
Season	3
First Name	Judy
Last Name	Rearick
Sex	F
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	0
Citizenship	USA
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	-
High Point (m)	True
Personal High Point (m)	6143
Summit Date 1	1974-11-18
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	4
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	-86
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	judy rearick
Year of Birth	-
Year	1974
Age at Expedition	-
Role	Member

Field	Value
ID	26914
Imported	2026-03-06 18:06:05.675609
Expedition ID	URKM74301
Member ID	04
Peak ID	URKM
Year	1974
Season	3
First Name	Bobby
Last Name	Campbell
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	0
Citizenship	USA
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	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	5800
Summit Date 1	1974-11-19
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	3
Summit Term	3
HCN	0
Checksum	-80
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	bobby campbell
Year of Birth	-
Year	1974
Age at Expedition	-
Role	Member

Field	Value
ID	26915
Imported	2026-03-06 18:06:05.675609
Expedition ID	URKM74301
Member ID	02
Peak ID	URKM
Year	1974
Season	3
First Name	Chuck
Last Name	Beyrensmeyer
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	0
Citizenship	USA
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	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	5800
Summit Date 1	1974-11-19
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	3
Summit Term	3
HCN	0
Checksum	-80
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	chuck beyrensmeyer
Year of Birth	-
Year	1974
Age at Expedition	-
Role	Member

Field	Value
ID	26916
Imported	2026-03-06 18:06:05.675609
Expedition ID	URKM74301
Member ID	03
Peak ID	URKM
Year	1974
Season	3
First Name	Frances
Last Name	Butt
Sex	F
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	0
Citizenship	USA
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	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	False
Personal High Point (m)	5800
Summit Date 1	1974-11-19
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	3
Summit Term	3
HCN	0
Checksum	-80
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	frances butt
Year of Birth	-
Year	1974
Age at Expedition	-
Role	Member

7 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
William A. (Bill) Roos	M	1948	USA	Leader	Eldorado Springs, Colorado	Carpenter, mountaineering-equip designer, technical consultant	Details Other expeditions
Matthew (Matt) Wells	M	1946	USA	Climber	Hailey, Idaho	Ski patrolman, alpine instructor, high school teacher	Details Other expeditions
Larry Derby	M	-	USA	Climber	-	-	Details Other expeditions
Judy Rearick	F	-	USA	Climber	-	-	Details Other expeditions
Bobby Campbell	M	-	USA	Climber	-	-	Details Other expeditions
Chuck Beyrensmeyer	M	-	USA	Climber	-	-	Details Other expeditions
Frances Butt	F	-	USA	Climber	-	-	Details Other expeditions

References

Field	Value
ID	1375
Imported	2026-03-06 18:06:36.307770
Expedition ID	URKM74301
Reference ID	01
Year	1974
Type	2
Journal	AAJ
Author	Wells, Matthew
Title	-
Publisher	-
Publication Date	1975
Language	-
Citation	49:201 (1975)
Yak 94	-
Notes	-

Field	Value
ID	13126
Imported	2026-03-06 18:06:36.307770
Expedition ID	URKM74301
Reference ID	02
Year	1974
Type	5
Journal	-
Author	-
Title	http://publications.americanalpineclub.org/articles/12197520102/Asia-Nepal-Urkinmang-Langtang-Himal
Publisher	-
Publication Date	-
Language	-
Citation	-
Yak 94	-
Notes	-

2 recorded references.

Expedition ID	Journal	Author	Title	Publisher	Citation	Yak 94
URKM74301	AAJ	Wells, Matthew	-	-	49:201 (1975)	-
URKM74301	-	-	http://publications.americanalpineclub.org/articles/12197520102/Asia-Nepal-Urkinmang-Langtang-Himal	-	-	-