Leonpo Gang | 1962 E Ridge from Phurbi Chyachumbu Glacier

A Japan expedition to Leonpo Gang in 1962 via E Ridge from Phurbi Chyachumbu Glacier, led by Akira Takahashi. Summit reached on 3rd May 1962. 9 members recorded.

Expedition Details

Field	Value
ID	2916
Imported	2026-03-06 18:04:49.359634
Expedition ID	LEON62101
Peak ID	LEON
Year	1962
Season	1
Host Country	1
Route 1	E Ridge from Phurbi Chyachumbu Glacier
Route 2	-
Route 3	-
Route 4	-
Nationality	Japan
Leaders	Akira Takahashi
Sponsor	All Japan Himalayan Expedition (Tokyo)
Success 1	True
Success 2	False
Success 3	False
Success 4	False
Ascent 1	1st,2nd
Ascent 2	-
Ascent 3	-
Ascent 4	-
Claimed	False
Disputed	False
Countries	-
Approach	-
Basecamp Date	1962-03-24
Summit Date	1962-05-03
Summit Time	1403
Summit Days	40
Total Days	54
Termination Date	1962-05-17
Termination Reason	1
Termination Notes	-
High Point (m)	6979
Traverse	False
Ski	False
Paraglide	False
Camps	7
Fixed Rope (m)	0
Total Members	8
Summit Members	7
Member Deaths	0
Total Hired	9
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(24/03,4075m),ABC(28/03,4450m),C1(4400m),C2(5020m),C3(10/04,5380m),C4(5640m),C5(5910m),C6(6450m),C7(6850m),Smt(03,05/05)
Route Notes	-
Accidents	-
Achievement	-
Agency	-
Commercial Route	-
Standard Route	-
Primary Route	False
Primary Member	False
Primary Reference	-
Primary ID	-
Checksum	2440425
Year	1962
Summit Success	True
O2 Summary	None
Route (lowercase)	e ridge from phurbi chyachumbu glacier

Members

Field	Value
ID	22275
Imported	2026-03-06 18:06:05.675609
Expedition ID	LEON62101
Member ID	01
Peak ID	LEON
Year	1962
Season	1
First Name	Akira
Last Name	Takahashi
Sex	M
Age	0
Birth Date	-
Year of Birth	1914
Calculated Age	48
Citizenship	Japan
Status	Leader
Residence	Tokyo, Japan
Occupation	-
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)	6450
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	2
Summit Term	19
HCN	0
Checksum	2418282
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	akira takahashi
Year of Birth	1914
Year	1962
Age at Expedition	48
Role	Leader

Field	Value
ID	22276
Imported	2026-03-06 18:06:05.675609
Expedition ID	LEON62101
Member ID	05
Peak ID	LEON
Year	1962
Season	1
First Name	Tadashi
Last Name	Morita
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	27
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	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	6979
Summit Date 1	1962-05-03
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1403
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	1
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	-42
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	tadashi morita
Year of Birth	-
Year	1962
Age at Expedition	-
Role	Member

Field	Value
ID	22277
Imported	2026-03-06 18:06:05.675609
Expedition ID	LEON62101
Member ID	08
Peak ID	LEON
Year	1962
Season	1
First Name	Kazunari
Last Name	Yasuhisa
Sex	M
Age	0
Birth Date	-
Year of Birth	1938
Calculated Age	23
Citizenship	Japan
Status	Climber
Residence	Tokyo, Japan
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)	6979
Summit Date 1	1962-05-03
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1403
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	1
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	2427095
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	kazunari yasuhisa
Year of Birth	1938
Year	1962
Age at Expedition	24
Role	Member

Field	Value
ID	22278
Imported	2026-03-06 18:06:05.675609
Expedition ID	LEON62101
Member ID	04
Peak ID	LEON
Year	1962
Season	1
First Name	Yukihiko
Last Name	Kato
Sex	M
Age	0
Birth Date	-
Year of Birth	1933
Calculated Age	29
Citizenship	Japan
Status	Climber
Residence	Nagoya, Japan
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)	6979
Summit Date 1	1962-05-05
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0930
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	2425128
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	yukihiko kato
Year of Birth	1933
Year	1962
Age at Expedition	29
Role	Member

Field	Value
ID	22279
Imported	2026-03-06 18:06:05.675609
Expedition ID	LEON62101
Member ID	07
Peak ID	LEON
Year	1962
Season	1
First Name	Makoto
Last Name	Takashima
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	28
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	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	6979
Summit Date 1	1962-05-05
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0930
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	-42
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	makoto takashima
Year of Birth	-
Year	1962
Age at Expedition	-
Role	Member

Field	Value
ID	22280
Imported	2026-03-06 18:06:05.675609
Expedition ID	LEON62101
Member ID	06
Peak ID	LEON
Year	1962
Season	1
First Name	Mitsuru
Last Name	Nakano
Sex	M
Age	0
Birth Date	-
Year of Birth	1925
Calculated Age	37
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	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	6979
Summit Date 1	1962-05-05
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1140
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	2422261
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	mitsuru nakano
Year of Birth	1925
Year	1962
Age at Expedition	37
Role	Member

Field	Value
ID	22281
Imported	2026-03-06 18:06:05.675609
Expedition ID	LEON62101
Member ID	03
Peak ID	LEON
Year	1962
Season	1
First Name	Yoshikazu
Last Name	Ishida
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	32
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	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	6979
Summit Date 1	1962-05-05
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1140
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	-42
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	yoshikazu ishida
Year of Birth	-
Year	1962
Age at Expedition	-
Role	Member

Field	Value
ID	22282
Imported	2026-03-06 18:06:05.675609
Expedition ID	LEON62101
Member ID	02
Peak ID	LEON
Year	1962
Season	1
First Name	Masahito
Last Name	Akiyama
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	29
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	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	6979
Summit Date 1	1962-05-05
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1140
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	-42
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	masahito akiyama
Year of Birth	-
Year	1962
Age at Expedition	-
Role	Member

Field	Value
ID	26574
Imported	2026-03-06 18:06:05.675609
Expedition ID	LEON62101
Member ID	09
Peak ID	LEON
Year	1962
Season	1
First Name	Ang Tshering
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	1910
Calculated Age	51
Citizenship	Nepal
Status	Sirdar
Residence	Darjeeling, India
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)	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	HC #36; aka Ang Tsering I
Necrology	-
Summit Bid	1
Summit Term	17
HCN	36
Checksum	-1906
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	ang tshering sherpa
Year of Birth	1910
Year	1962
Age at Expedition	52
Role	Hired

9 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Akira Takahashi	M	1914	Japan	Leader	Tokyo, Japan	-	Details Other expeditions
Tadashi Morita	M	-	Japan	Climber	-	-	Details Other expeditions
Kazunari Yasuhisa	M	1938	Japan	Climber	Tokyo, Japan	-	Details Other expeditions
Yukihiko Kato	M	1933	Japan	Climber	Nagoya, Japan	-	Details Other expeditions
Makoto Takashima	M	-	Japan	Climber	-	-	Details Other expeditions
Mitsuru Nakano	M	1925	Japan	Climber	-	-	Details Other expeditions
Yoshikazu Ishida	M	-	Japan	Climber	-	-	Details Other expeditions
Masahito Akiyama	M	-	Japan	Climber	-	-	Details Other expeditions
Ang Tshering Sherpa	M	1910	Nepal	Sirdar	Darjeeling, India	-	Details Other expeditions

References

Field	Value
ID	1044
Imported	2026-03-06 18:06:36.307770
Expedition ID	LEON62101
Reference ID	01
Year	1962
Type	2
Journal	AAJ
Author	Takahashi, Akira
Title	-
Publisher	-
Publication Date	1963
Language	-
Citation	37:520 (1963)
Yak 94	-
Notes	-

Field	Value
ID	1100
Imported	2026-03-06 18:06:36.307770
Expedition ID	LEON62101
Reference ID	02
Year	1962
Type	2
Journal	JAC
Author	Takahashi, A.
Title	Jugal Himal, 1962
Publisher	-
Publication Date	1963
Language	English
Citation	58:7-9 (1963)
Yak 94	-
Notes	Route maps and photos in English in Japanese section

Field	Value
ID	1134
Imported	2026-03-06 18:06:36.307770
Expedition ID	LEON62101
Reference ID	03
Year	1962
Type	2
Journal	HJ
Author	Takahashi, Akira
Title	The Ascent of Big White Peak
Publisher	-
Publication Date	1964
Language	-
Citation	25:43-50 (1964)
Yak 94	-
Notes	-

Field	Value
ID	5958
Imported	2026-03-06 18:06:36.307770
Expedition ID	LEON62101
Reference ID	04
Year	1962
Type	2
Journal	JAC
Author	Takahashi, A.
Title	Jugal Himal, 1962
Publisher	-
Publication Date	1963
Language	Japanese
Citation	58:103-118 (1963)
Yak 94	-
Notes	Includes route maps and photos in English

Field	Value
ID	13281
Imported	2026-03-06 18:06:36.307770
Expedition ID	LEON62101
Reference ID	05
Year	1962
Type	5
Journal	-
Author	-
Title	http://publications.americanalpineclub.org/articles/12196352001/Asia-Nepal-Jugal-Himal-Big-White-Peak
Publisher	-
Publication Date	-
Language	-
Citation	-
Yak 94	-
Notes	-

Field	Value
ID	13726
Imported	2026-03-06 18:06:36.307770
Expedition ID	LEON62101
Reference ID	06
Year	1962
Type	5
Journal	-
Author	-
Title	https://www.himalayanclub.org/hj/25/4/the-ascent-of-big-white-peak/
Publisher	-
Publication Date	-
Language	-
Citation	-
Yak 94	-
Notes	-

6 recorded references.

Expedition ID	Journal	Author	Title	Publisher	Citation	Yak 94
LEON62101	AAJ	Takahashi, Akira	-	-	37:520 (1963)	-
LEON62101	JAC	Takahashi, A.	Jugal Himal, 1962	-	58:7-9 (1963)	-
LEON62101	HJ	Takahashi, Akira	The Ascent of Big White Peak	-	25:43-50 (1964)	-
LEON62101	JAC	Takahashi, A.	Jugal Himal, 1962	-	58:103-118 (1963)	-
LEON62101	-	-	http://publications.americanalpineclub.org/articles/12196352001/Asia-Nepal-Jugal-Himal-Big-White-Peak	-	-	-
LEON62101	-	-	https://www.himalayanclub.org/hj/25/4/the-ascent-of-big-white-peak/	-	-	-