Thamserku | 1979 SW Face-W Ridge

A Japan expedition to Thamserku in 1979 via SW Face-W Ridge, led by Takeshi Kimura. Summit reached on 27th April 1979. 9 members recorded.

Expedition Details

Field	Value
ID	2082
Imported	2026-03-06 18:04:49.359634
Expedition ID	THAM79101
Peak ID	THAM
Year	1979
Season	1
Host Country	1
Route 1	SW Face-W Ridge
Route 2	-
Route 3	-
Route 4	-
Nationality	Japan
Leaders	Takeshi Kimura
Sponsor	Japanese Expedition Club to Thamserku
Success 1	True
Success 2	False
Success 3	False
Success 4	False
Ascent 1	2nd
Ascent 2	-
Ascent 3	-
Ascent 4	-
Claimed	False
Disputed	False
Countries	-
Approach	Lukla->Khumbu Valley
Basecamp Date	1979-03-30
Summit Date	1979-04-27
Summit Time	0815
Summit Days	28
Total Days	0
Termination Date	-
Termination Reason	1
Termination Notes	-
High Point (m)	6618
Traverse	False
Ski	False
Paraglide	False
Camps	3
Fixed Rope (m)	0
Total Members	9
Summit Members	2
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(30/03,4500m),C1(06/04,5900m),C2(19/04,6300m),C3(26/04,6400m),Biv(27/04,6600m),Smt(28/04)
Route Notes	S. Kimura - 5 May 79 Thamserku has 2 peaks. 1 rock peak is central peak south-southwest of main peak, main peak is little higher. Expedition 1st reached rock peak 27 April and bivouacked there 27/28 (rock peak = virgin peak). 28 April reached main summit 8:15 am and returned to attack camp same day. SW Face very difficult; very dangerous knife-ridge snow wall and snow wall at highest parts, so stopped 2nd summit attempt. Other Thamserku expedition climbed 6200-6300m and then returned to ABC for 3 days very slowly and so thought they had accident but this wrong. Think they are now in KTM. No accidents, illness, frostbite. Only Takashi Kimura in KTM; others arrived about 10 May except Satoshi Kimura and 1 other who came earlier and left 3 May for jobs in Japan. Shailendra Raj Sharma, Tourism - 2 May 79 Thamserku (Japanese Expedition Club) Summit 28 April by Satoshi Kimura (who arrived KTM today with another member) Sakae Hosogai Summiters arrived C3 at 6300m 26 April 14:45 hours. 27 April left C3 7:00 am and climbed steep rock pillar to biv at 6500m at 16:45 hours. 28 April left biv 7:00 am and reached summit at 8:15 am, left summit at 9:15 am, arrived C3 at 5:00 am. All are well. Satoshi Kimura - 14 March 79 9 total members: 3 arrive yesterday, others arrive 18 March. Leave KTM about 20 March by air to Lukla. Route from SW Face - arrive 25 March BC at 4000m 3 high camps: C1 (ABC) - 5000m C2 - 5800m C3 - 6300m after 3 weeks No Sherpas above BC; only one kitchen boy. No oxygen for climbing or sleeping. Other Japanese this spring from North Face - also very difficult route. SW Face: will climb via a ridge on this face; very steep: maybe 60%. Face is 1500m high. Mixed rock and ice on ridge. Hillary team climbed South Ridge, only previous attempt.
Accidents	No accidents, illness, frostbite
Achievement	-
Agency	-
Commercial Route	-
Standard Route	-
Primary Route	False
Primary Member	False
Primary Reference	-
Primary ID	-
Checksum	2447545
Year	1979
Summit Success	True
O2 Summary	None
Route (lowercase)	sw face-w ridge

Members

Field	Value
ID	21163
Imported	2026-03-06 18:06:05.675609
Expedition ID	THAM79101
Member ID	03
Peak ID	THAM
Year	1979
Season	1
First Name	Hideaki
Last Name	Goto
Sex	M
Age	0
Birth Date	-
Year of Birth	1953
Calculated Age	26
Citizenship	Japan
Status	Climber
Residence	Tatomi, Yamanashi, Japan
Occupation	Salesman of electric parts
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	2432359
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	hideaki goto
Year of Birth	1953
Year	1979
Age at Expedition	26
Role	Member

Field	Value
ID	21164
Imported	2026-03-06 18:06:05.675609
Expedition ID	THAM79101
Member ID	04
Peak ID	THAM
Year	1979
Season	1
First Name	Takashi
Last Name	Hayakawa
Sex	M
Age	0
Birth Date	-
Year of Birth	1952
Calculated Age	26
Citizenship	Japan
Status	Climber
Residence	Isawa, Yamanashi, Japan
Occupation	Designs electric motors
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	2432271
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	takashi hayakawa
Year of Birth	1952
Year	1979
Age at Expedition	27
Role	Member

Field	Value
ID	21165
Imported	2026-03-06 18:06:05.675609
Expedition ID	THAM79101
Member ID	05
Peak ID	THAM
Year	1979
Season	1
First Name	Yasuhiko
Last Name	Hayashi
Sex	M
Age	0
Birth Date	-
Year of Birth	1952
Calculated Age	27
Citizenship	Japan
Status	Climber
Residence	Numazu, Shizuoka, Japan
Occupation	Computer 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	-
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	2432052
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	yasuhiko hayashi
Year of Birth	1952
Year	1979
Age at Expedition	27
Role	Member

Field	Value
ID	21166
Imported	2026-03-06 18:06:05.675609
Expedition ID	THAM79101
Member ID	02
Peak ID	THAM
Year	1979
Season	1
First Name	Sakae
Last Name	Hosogai
Sex	M
Age	0
Birth Date	-
Year of Birth	1950
Calculated Age	28
Citizenship	Japan
Status	Deputy Leader
Residence	Tokyo, Japan
Occupation	Geography student (Tokyo Metropolitan University)
Leader	False
Deputy	True
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)	6618
Summit Date 1	1979-04-28
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0815
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	2
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	2431339
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	sakae hosogai
Year of Birth	1950
Year	1979
Age at Expedition	29
Role	Deputy

Field	Value
ID	21167
Imported	2026-03-06 18:06:05.675609
Expedition ID	THAM79101
Member ID	06
Peak ID	THAM
Year	1979
Season	1
First Name	Takashi
Last Name	Kamo
Sex	M
Age	0
Birth Date	-
Year of Birth	1953
Calculated Age	25
Citizenship	Japan
Status	Climber
Residence	Tokyo, Japan
Occupation	Chemical 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	-
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	2432466
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	takashi kamo
Year of Birth	1953
Year	1979
Age at Expedition	26
Role	Member

Field	Value
ID	21168
Imported	2026-03-06 18:06:05.675609
Expedition ID	THAM79101
Member ID	07
Peak ID	THAM
Year	1979
Season	1
First Name	Satoshi
Last Name	Kimura
Sex	M
Age	0
Birth Date	-
Year of Birth	1946
Calculated Age	32
Citizenship	Japan
Status	Climber
Residence	Nagoya, Japan
Occupation	Mechanical 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	-
High Point (m)	True
Personal High Point (m)	6618
Summit Date 1	1979-04-28
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0815
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	2
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	2429857
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	satoshi kimura
Year of Birth	1946
Year	1979
Age at Expedition	33
Role	Member

Field	Value
ID	21169
Imported	2026-03-06 18:06:05.675609
Expedition ID	THAM79101
Member ID	01
Peak ID	THAM
Year	1979
Season	1
First Name	Takashi
Last Name	Kimura
Sex	M
Age	0
Birth Date	-
Year of Birth	1941
Calculated Age	37
Citizenship	Japan
Status	Leader
Residence	Yokohama, Japan
Occupation	Salesman in advertising company
Leader	True
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	2428262
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	takashi kimura
Year of Birth	1941
Year	1979
Age at Expedition	38
Role	Leader

Field	Value
ID	21170
Imported	2026-03-06 18:06:05.675609
Expedition ID	THAM79101
Member ID	08
Peak ID	THAM
Year	1979
Season	1
First Name	Yuji
Last Name	Mizutani
Sex	M
Age	0
Birth Date	-
Year of Birth	1954
Calculated Age	24
Citizenship	Japan
Status	Climber
Residence	Kagamiwara, Gifu, Japan
Occupation	Medical student
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	2432817
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	yuji mizutani
Year of Birth	1954
Year	1979
Age at Expedition	25
Role	Member

Field	Value
ID	21171
Imported	2026-03-06 18:06:05.675609
Expedition ID	THAM79101
Member ID	09
Peak ID	THAM
Year	1979
Season	1
First Name	Kozo
Last Name	Naraki
Sex	M
Age	0
Birth Date	-
Year of Birth	1956
Calculated Age	22
Citizenship	Japan
Status	Climber
Residence	Komaki, Aichi, Japan
Occupation	Printer
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	2433566
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	kozo naraki
Year of Birth	1956
Year	1979
Age at Expedition	23
Role	Member

9 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Hideaki Goto	M	1953	Japan	Climber	Tatomi, Yamanashi, Japan	Salesman of electric parts	Details Other expeditions
Takashi Hayakawa	M	1952	Japan	Climber	Isawa, Yamanashi, Japan	Designs electric motors	Details Other expeditions
Yasuhiko Hayashi	M	1952	Japan	Climber	Numazu, Shizuoka, Japan	Computer engineer	Details Other expeditions
Sakae Hosogai	M	1950	Japan	Deputy Leader	Tokyo, Japan	Geography student (Tokyo Metropolitan University)	Details Other expeditions
Takashi Kamo	M	1953	Japan	Climber	Tokyo, Japan	Chemical engineer	Details Other expeditions
Satoshi Kimura	M	1946	Japan	Climber	Nagoya, Japan	Mechanical engineer	Details Other expeditions
Takashi Kimura	M	1941	Japan	Leader	Yokohama, Japan	Salesman in advertising company	Details Other expeditions
Yuji Mizutani	M	1954	Japan	Climber	Kagamiwara, Gifu, Japan	Medical student	Details Other expeditions
Kozo Naraki	M	1956	Japan	Climber	Komaki, Aichi, Japan	Printer	Details Other expeditions

References

Field	Value
ID	1499
Imported	2026-03-06 18:06:36.307770
Expedition ID	THAM79101
Reference ID	01
Year	1979
Type	2
Journal	AAJ
Author	-
Title	-
Publisher	-
Publication Date	1980
Language	-
Citation	53:613 (1980)
Yak 94	-
Notes	-

Field	Value
ID	1668
Imported	2026-03-06 18:06:36.307770
Expedition ID	THAM79101
Reference ID	02
Year	1979
Type	2
Journal	JAC
Author	Kimura, Takashi
Title	South-west Wall of Thamserku 1979
Publisher	-
Publication Date	1980
Language	Japanese
Citation	75:123-132 (1980)
Yak 94	-
Notes	Includes route maps and photos in English

Field	Value
ID	6991
Imported	2026-03-06 18:06:36.307770
Expedition ID	THAM79101
Reference ID	03
Year	1979
Type	3
Journal	IWA
Author	-
Title	-
Publisher	-
Publication Date	1980
Language	Japanese w/English summary
Citation	74:151-152 (1980)
Yak 94	-
Notes	-

Field	Value
ID	6992
Imported	2026-03-06 18:06:36.307770
Expedition ID	THAM79101
Reference ID	04
Year	1979
Type	3
Journal	IWA
Author	-
Title	-
Publisher	-
Publication Date	1980
Language	Japanese
Citation	74:36 (1980)
Yak 94	-
Notes	-

Field	Value
ID	12993
Imported	2026-03-06 18:06:36.307770
Expedition ID	THAM79101
Reference ID	05
Year	1979
Type	5
Journal	-
Author	-
Title	http://publications.americanalpineclub.org/articles/12198061301/Asia-Nepal-Thamserku-Southwest-Face
Publisher	-
Publication Date	-
Language	-
Citation	-
Yak 94	-
Notes	-

5 recorded references.

Expedition ID	Journal	Author	Title	Publisher	Citation	Yak 94
THAM79101	AAJ	-	-	-	53:613 (1980)	-
THAM79101	JAC	Kimura, Takashi	South-west Wall of Thamserku 1979	-	75:123-132 (1980)	-
THAM79101	IWA	-	-	-	74:151-152 (1980)	-
THAM79101	IWA	-	-	-	74:36 (1980)	-
THAM79101	-	-	http://publications.americanalpineclub.org/articles/12198061301/Asia-Nepal-Thamserku-Southwest-Face	-	-	-