Makalu II | 1971 W Ridge (to 6700m)

A Japan expedition to Makalu II in 1971 via W Ridge (to 6700m), led by Makoto Numata, Kozu Kohama. Summit reached on 15th October 1971. 4 members recorded.

Expedition Details

Field	Value
ID	2940
Imported	2026-03-06 18:04:49.359634
Expedition ID	MAK271301
Peak ID	MAK2
Year	1971
Season	3
Host Country	1
Route 1	W Ridge (to 6700m)
Route 2	S Ridge (to 7300m)
Route 3	-
Route 4	-
Nationality	Japan
Leaders	Makoto Numata, Kozu Kohama
Sponsor	Chiba University
Success 1	False
Success 2	False
Success 3	False
Success 4	False
Ascent 1	-
Ascent 2	-
Ascent 3	-
Ascent 4	-
Claimed	False
Disputed	False
Countries	-
Approach	-
Basecamp Date	-
Summit Date	1971-10-15
Summit Time	-
Summit Days	0
Total Days	0
Termination Date	-
Termination Reason	6
Termination Notes	Abandoned at 7300m due to member death from AMS
High Point (m)	7300
Traverse	False
Ski	False
Paraglide	False
Camps	4
Fixed Rope (m)	0
Total Members	0
Summit Members	0
Member Deaths	1
Total Hired	1
Summit Hired	0
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,C1,C2,C3,C4(7200m),xxx(15/10,7300m)
Route Notes	-
Accidents	1 member died of AMS
Achievement	-
Agency	-
Commercial Route	-
Standard Route	-
Primary Route	False
Primary Member	False
Primary Reference	-
Primary ID	-
Checksum	2444066
Year	1971
Summit Success	False
O2 Summary	None
Route (lowercase)	w ridge (to 6700m)

Members

Field	Value
ID	22483
Imported	2026-03-06 18:06:05.675609
Expedition ID	MAK271301
Member ID	02
Peak ID	MAK2
Year	1971
Season	3
First Name	Kozo
Last Name	Kohama
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	32
Citizenship	Japan
Status	Deputy Leader
Residence	-
Occupation	-
Leader	False
Deputy	True
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	1
Summit Term	5
HCN	0
Checksum	46
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	kozo kohama
Year of Birth	-
Year	1971
Age at Expedition	-
Role	Deputy

Field	Value
ID	26878
Imported	2026-03-06 18:06:05.675609
Expedition ID	MAK271301
Member ID	01
Peak ID	MAK2
Year	1971
Season	3
First Name	Makoto
Last Name	Numata
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	54
Citizenship	Japan
Status	Leader
Residence	-
Occupation	Professor of ecology at Chiba University
Leader	True
Deputy	False
Basecamp Only	True
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	1
Summit Term	17
HCN	0
Checksum	46
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	makoto numata
Year of Birth	-
Year	1971
Age at Expedition	-
Role	Leader

Field	Value
ID	26879
Imported	2026-03-06 18:06:05.675609
Expedition ID	MAK271301
Member ID	03
Peak ID	MAK2
Year	1971
Season	3
First Name	Kunio
Last Name	Takagi
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	0
Citizenship	Japan
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)	True
Personal High Point (m)	7300
Summit Date 1	1971-10-15
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	2
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	True
Death Date	1971-10-20
Death Time	-
Death Type	1
Death Height (m)	7300
Death Class	3
AMS	True
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	Died on 20 Oct after becoming ill on Oct 16 at 7300m
Member Notes	-
Necrology	(....-1971) Died 20 Oct 1971 on Makalu II from AMS
Summit Bid	1
Summit Term	5
HCN	0
Checksum	-26
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	2
Name (lowercase)	kunio takagi
Year of Birth	-
Year	1971
Age at Expedition	-
Role	Member

Field	Value
ID	26880
Imported	2026-03-06 18:06:05.675609
Expedition ID	MAK271301
Member ID	04
Peak ID	MAK2
Year	1971
Season	3
First Name	Tendi
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	0
Citizenship	Nepal
Status	H-A Worker
Residence	-
Occupation	-
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	True
Sherpa	True
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	7300
Summit Date 1	1971-10-15
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	2
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	5
HCN	0
Checksum	46
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	tendi sherpa
Year of Birth	-
Year	1971
Age at Expedition	-
Role	Hired

4 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Kozo Kohama	M	-	Japan	Deputy Leader	-	-	Details Other expeditions
Makoto Numata	M	-	Japan	Leader	-	Professor of ecology at Chiba University	Details Other expeditions
Kunio Takagi	M	-	Japan	Climber	-	-	Details Other expeditions
Tendi Sherpa	M	-	Nepal	H-A Worker	-	-	Details Other expeditions

References

Field	Value
ID	1291
Imported	2026-03-06 18:06:36.307770
Expedition ID	MAK271301
Reference ID	01
Year	1971
Type	2
Journal	AAJ
Author	Cheney, Michael J.
Title	-
Publisher	-
Publication Date	1972
Language	-
Citation	46:182 (1972)
Yak 94	-
Notes	-

Field	Value
ID	3636
Imported	2026-03-06 18:06:36.307770
Expedition ID	MAK271301
Reference ID	02
Year	1971
Type	3
Journal	MM
Author	-
Title	-
Publisher	-
Publication Date	1972
Language	-
Citation	20:12 (Mar 1972)
Yak 94	-
Notes	-

Field	Value
ID	13188
Imported	2026-03-06 18:06:36.307770
Expedition ID	MAK271301
Reference ID	03
Year	1971
Type	5
Journal	-
Author	-
Title	http://publications.americanalpineclub.org/articles/12197218201/Asia-Nepal-Makalu-II-Kangchungtse
Publisher	-
Publication Date	-
Language	-
Citation	-
Yak 94	-
Notes	-

3 recorded references.

Expedition ID	Journal	Author	Title	Publisher	Citation	Yak 94
MAK271301	AAJ	Cheney, Michael J.	-	-	46:182 (1972)	-
MAK271301	MM	-	-	-	20:12 (Mar 1972)	-
MAK271301	-	-	http://publications.americanalpineclub.org/articles/12197218201/Asia-Nepal-Makalu-II-Kangchungtse	-	-	-