Makalu II | 1985 W Face-S Ridge

A Netherlands expedition to Makalu II in 1985 via W Face-S Ridge, led by Ronald Naar. Summit reached on 11th October 1985. 12 members recorded.

Expedition Details

Field	Value
ID	208
Imported	2026-03-06 18:04:49.359634
Expedition ID	MAK285301
Peak ID	MAK2
Year	1985
Season	3
Host Country	1
Route 1	W Face-S Ridge
Route 2	-
Route 3	-
Route 4	-
Nationality	Netherlands
Leaders	Ronald Naar
Sponsor	Kangchungtse Summit Expedition
Success 1	True
Success 2	False
Success 3	False
Success 4	False
Ascent 1	13th,14th
Ascent 2	-
Ascent 3	-
Ascent 4	-
Claimed	False
Disputed	False
Countries	-
Approach	Shipton Pass
Basecamp Date	1985-09-23
Summit Date	1985-10-11
Summit Time	1100
Summit Days	18
Total Days	21
Termination Date	1985-10-14
Termination Reason	1
Termination Notes	-
High Point (m)	7678
Traverse	False
Ski	False
Paraglide	False
Camps	3
Fixed Rope (m)	0
Total Members	10
Summit Members	4
Member Deaths	2
Total Hired	5
Summit Hired	2
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(23/09,5400m),C1(25/09,5800m),C2(28/09,6600m),C3(02/10,7400m),Smt(11,13/10)
Route Notes	BC at 5400m on ridge west side of south end of Chago Glacier C1 at 5800m middle moraine of Chago Glacier C3 at 7400m at Makalu La. All camps at same sites at Italian early Oct in BC to rest for several days and then up. 9th Oct so bad weather no progress possible and all in C1 and C2. 10th Oct first party went to C3 in heavy snowstorm. 11 Oct good weather till 9:15 am, then snow fall again but went on to top and reached it 11:00 am. 13th Oct clear, beautiful day and all camps cleared and all in BC that evening. 14th Oct left BC and reached KTM 22nd Oct. Between C2 and C3 always deep snow but not difficult route. Two members (Frank Merjenberg and Walter Roos) left expedition on the return trek and attempted to cross over into Khumbu via Sherpani Col, West Col and Amphu Laptsa. An unusually severe storm on Oct 16 trapped them just below Sherpani Col. They suffocated to death when their tents collapsed under the weight of 3 meters of new snow. 2 members failed to return from BC to KTM; it is assumed they perished in the deep snow of West Col-Sherpani Col region. Walter Roos and Frank Merjenberg: 17-19 Oct trekking via Sherpani Col and West Col. Took with them no Sherpas, 3 days food only. Never turned up and now must presumed lost. Were due in KTM 4 weeks ago. Hermann Tollemaar - 18 Nov 1985 All hope of finding them has been abandoned. Naar - 6 May 1986 2 missing climbers were found recently dead in their tent on Sherpani Col. Probably died of suffocation under heavy snowfall. Their bodies were found by a trekking party lead by Richard Salisbury in the following May 1986. The bodies were buried in a collapsed tent on the Barun side of Sherpani Col at about 5500m.
Accidents	2 members failed to return from BC to Kathmandu (they perished in major snowstorm below Sherpani Col; bodies found by trekking group May 1986)
Achievement	1st Dutch ascent
Agency	-
Commercial Route	-
Standard Route	-
Primary Route	False
Primary Member	False
Primary Reference	-
Primary ID	-
Checksum	2449235
Year	1985
Summit Success	True
O2 Summary	None
Route (lowercase)	w face-s ridge

Members

Field	Value
ID	17069
Imported	2026-03-06 18:06:05.675609
Expedition ID	MAK285301
Member ID	05
Peak ID	MAK2
Year	1985
Season	3
First Name	Tilleke
Last Name	Lippmann
Sex	F
Age	0
Birth Date	-
Year of Birth	1955
Calculated Age	29
Citizenship	Netherlands
Status	Climber
Residence	Hague, Netherlands
Occupation	Linguist and travel writer
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	2433428
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	tilleke lippmann
Year of Birth	1955
Year	1985
Age at Expedition	30
Role	Member

Field	Value
ID	17070
Imported	2026-03-06 18:06:05.675609
Expedition ID	MAK285301
Member ID	02
Peak ID	MAK2
Year	1985
Season	3
First Name	Frank Alexander
Last Name	Merjenberg
Sex	M
Age	0
Birth Date	-
Year of Birth	1954
Calculated Age	30
Citizenship	Netherlands
Status	Deputy Leader
Residence	Eindhoven, Netherlands
Occupation	Dentist
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)	7678
Summit Date 1	1985-10-13
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	14
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	1985-10-16
Death Time	-
Death Type	11
Death Height (m)	5500
Death Class	1
AMS	False
Weather	True
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	Disappeared on return trek near Sherpani Col (found next May buried in tent)
Member Notes	-
Necrology	(1954-1985) Died 16 Oct 1985 on Makalu II return march in snowstorm
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2432972
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	frank alexander merjenberg
Year of Birth	1954
Year	1985
Age at Expedition	31
Role	Deputy

Field	Value
ID	17071
Imported	2026-03-06 18:06:05.675609
Expedition ID	MAK285301
Member ID	01
Peak ID	MAK2
Year	1985
Season	3
First Name	Ronald
Last Name	Naar
Sex	M
Age	0
Birth Date	-
Year of Birth	1955
Calculated Age	30
Citizenship	Netherlands
Status	Leader
Residence	Hague, Netherlands
Occupation	Photojournalist & 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)	7678
Summit Date 1	1985-10-11
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1100
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	13
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	(1955-2011) Died 22 May 2011 on Cho Oyu
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2433156
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	ronald naar
Year of Birth	1955
Year	1985
Age at Expedition	30
Role	Leader

Field	Value
ID	17072
Imported	2026-03-06 18:06:05.675609
Expedition ID	MAK285301
Member ID	06
Peak ID	MAK2
Year	1985
Season	3
First Name	Walter
Last Name	Roos
Sex	M
Age	0
Birth Date	-
Year of Birth	1946
Calculated Age	39
Citizenship	Netherlands
Status	Climber
Residence	Hoorn, Netherlands
Occupation	French teacher
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	True
Death Date	1985-10-16
Death Time	-
Death Type	11
Death Height (m)	5500
Death Class	1
AMS	False
Weather	True
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	Disappeared on return trek near Sherpani Col (found next May buried in tent)
Member Notes	-
Necrology	(1946-1985) Died 16 Oct 1985 on Makalu II return march from snowstorm
Summit Bid	0
Summit Term	0
HCN	0
Checksum	2429821
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	walter roos
Year of Birth	1946
Year	1985
Age at Expedition	39
Role	Member

Field	Value
ID	17073
Imported	2026-03-06 18:06:05.675609
Expedition ID	MAK285301
Member ID	11
Peak ID	MAK2
Year	1985
Season	3
First Name	Ang Pasang
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	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	7678
Summit Date 1	1985-10-13
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	14
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	-106
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	ang pasang sherpa
Year of Birth	-
Year	1985
Age at Expedition	-
Role	Hired

Field	Value
ID	17074
Imported	2026-03-06 18:06:05.675609
Expedition ID	MAK285301
Member ID	12
Peak ID	MAK2
Year	1985
Season	3
First Name	Nawang Thile (Pemba Dorje)
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	1953
Calculated Age	32
Citizenship	Nepal
Status	H-A Worker
Residence	Beding, Dolakha
Occupation	-
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	True
Sherpa	True
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)	7678
Summit Date 1	1985-10-11
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1100
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	13
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	aka Ang Nawang
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2432366
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	nawang thile (pemba dorje) sherpa
Year of Birth	1953
Year	1985
Age at Expedition	32
Role	Hired

Field	Value
ID	17075
Imported	2026-03-06 18:06:05.675609
Expedition ID	MAK285301
Member ID	07
Peak ID	MAK2
Year	1985
Season	3
First Name	Wim
Last Name	Teeuwisse
Sex	M
Age	0
Birth Date	-
Year of Birth	1946
Calculated Age	38
Citizenship	Netherlands
Status	Climber
Residence	Den Bosch, Netherlands
Occupation	Urban planner
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)	7678
Summit Date 1	1985-10-11
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1100
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	13
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	2430101
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	wim teeuwisse
Year of Birth	1946
Year	1985
Age at Expedition	39
Role	Member

Field	Value
ID	17076
Imported	2026-03-06 18:06:05.675609
Expedition ID	MAK285301
Member ID	08
Peak ID	MAK2
Year	1985
Season	3
First Name	Lodewijk (Loek)
Last Name	Vermeulen
Sex	M
Age	0
Birth Date	-
Year of Birth	1948
Calculated Age	37
Citizenship	Netherlands
Status	Climber
Residence	Hazerswoude, Netherlands
Occupation	Owner, sporting-goods mfg & importing business
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	2430596
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	lodewijk (loek) vermeulen
Year of Birth	1948
Year	1985
Age at Expedition	37
Role	Member

Field	Value
ID	17077
Imported	2026-03-06 18:06:05.675609
Expedition ID	MAK285301
Member ID	09
Peak ID	MAK2
Year	1985
Season	3
First Name	Evert
Last Name	Wesker
Sex	M
Age	0
Birth Date	-
Year of Birth	1952
Calculated Age	33
Citizenship	Netherlands
Status	Climber
Residence	Amsterdam, Netherlands
Occupation	Chemist & cycle-racer
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)	7678
Summit Date 1	1985-10-11
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1100
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	13
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	2432237
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	evert wesker
Year of Birth	1952
Year	1985
Age at Expedition	33
Role	Member

Field	Value
ID	17078
Imported	2026-03-06 18:06:05.675609
Expedition ID	MAK285301
Member ID	10
Peak ID	MAK2
Year	1985
Season	3
First Name	Chris
Last Name	Zwarts
Sex	M
Age	0
Birth Date	-
Year of Birth	1938
Calculated Age	46
Citizenship	Netherlands
Status	Climber
Residence	Gouda, Netherlands
Occupation	Photolab owner
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	2427255
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	chris zwarts
Year of Birth	1938
Year	1985
Age at Expedition	47
Role	Member

Field	Value
ID	17079
Imported	2026-03-06 18:06:05.675609
Expedition ID	MAK285301
Member ID	03
Peak ID	MAK2
Year	1985
Season	3
First Name	Ria
Last Name	De Barre
Sex	F
Age	0
Birth Date	-
Year of Birth	1957
Calculated Age	28
Citizenship	Netherlands
Status	Climber
Residence	Goes, Zeeland, Netherlands
Occupation	Police officer
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	2433881
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	ria de barre
Year of Birth	1957
Year	1985
Age at Expedition	28
Role	Member

Field	Value
ID	17080
Imported	2026-03-06 18:06:05.675609
Expedition ID	MAK285301
Member ID	04
Peak ID	MAK2
Year	1985
Season	3
First Name	Pieter
Last Name	De Jong
Sex	M
Age	0
Birth Date	-
Year of Birth	1945
Calculated Age	39
Citizenship	Netherlands
Status	Climber
Residence	Ryswyk, Netherlands
Occupation	Builder
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	2429768
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	pieter de jong
Year of Birth	1945
Year	1985
Age at Expedition	40
Role	Member

12 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Tilleke Lippmann	F	1955	Netherlands	Climber	Hague, Netherlands	Linguist and travel writer	Details Other expeditions
Frank Alexander Merjenberg	M	1954	Netherlands	Deputy Leader	Eindhoven, Netherlands	Dentist	Details Other expeditions
Ronald Naar	M	1955	Netherlands	Leader	Hague, Netherlands	Photojournalist & alpine guide	Details Other expeditions
Walter Roos	M	1946	Netherlands	Climber	Hoorn, Netherlands	French teacher	Details Other expeditions
Ang Pasang Sherpa	M	-	Nepal	H-A Worker	-	-	Details Other expeditions
Nawang Thile (Pemba Dorje) Sherpa	M	1953	Nepal	H-A Worker	Beding, Dolakha	-	Details Other expeditions
Wim Teeuwisse	M	1946	Netherlands	Climber	Den Bosch, Netherlands	Urban planner	Details Other expeditions
Lodewijk (Loek) Vermeulen	M	1948	Netherlands	Climber	Hazerswoude, Netherlands	Owner, sporting-goods mfg & importing business	Details Other expeditions
Evert Wesker	M	1952	Netherlands	Climber	Amsterdam, Netherlands	Chemist & cycle-racer	Details Other expeditions
Chris Zwarts	M	1938	Netherlands	Climber	Gouda, Netherlands	Photolab owner	Details Other expeditions
Ria De Barre	F	1957	Netherlands	Climber	Goes, Zeeland, Netherlands	Police officer	Details Other expeditions
Pieter De Jong	M	1945	Netherlands	Climber	Ryswyk, Netherlands	Builder	Details Other expeditions

References

Field	Value
ID	122
Imported	2026-03-06 18:06:36.307770
Expedition ID	MAK285301
Reference ID	01
Year	1985
Type	2
Journal	AAJ
Author	Naar, Ronald
Title	-
Publisher	-
Publication Date	1986
Language	-
Citation	60:219 (1986)
Yak 94	-
Notes	-

Field	Value
ID	3470
Imported	2026-03-06 18:06:36.307770
Expedition ID	MAK285301
Reference ID	02
Year	1985
Type	1
Journal	-
Author	Naar, Ronald
Title	Ijle Horzon
Publisher	De Toorts, The Hague, Netherlands
Publication Date	1990
Language	Dutch
Citation	-
Yak 94	N02
Notes	-

Field	Value
ID	4230
Imported	2026-03-06 18:06:36.307770
Expedition ID	MAK285301
Reference ID	03
Year	1985
Type	3
Journal	MM
Author	-
Title	-
Publisher	-
Publication Date	1986
Language	-
Citation	108:11 (Mar 1986)
Yak 94	-
Notes	-

Field	Value
ID	12474
Imported	2026-03-06 18:06:36.307770
Expedition ID	MAK285301
Reference ID	04
Year	1985
Type	5
Journal	-
Author	-
Title	http://publications.americanalpineclub.org/articles/12198621902/Asia-Nepal-Kangchungtse-Ascent-and-Tragedy
Publisher	-
Publication Date	-
Language	-
Citation	-
Yak 94	-
Notes	-

4 recorded references.

Expedition ID	Journal	Author	Title	Publisher	Citation	Yak 94
MAK285301	AAJ	Naar, Ronald	-	-	60:219 (1986)	-
MAK285301	-	Naar, Ronald	Ijle Horzon	De Toorts, The Hague, Netherlands	-	N02
MAK285301	MM	-	-	-	108:11 (Mar 1986)	-
MAK285301	-	-	http://publications.americanalpineclub.org/articles/12198621902/Asia-Nepal-Kangchungtse-Ascent-and-Tragedy	-	-	-