Everest | 1997 S Col-SE Ridge

A UK expedition to Everest in 1997 via S Col-SE Ridge, led by Malcolm Duff. Summit reached on 23rd May 1997. 10 members recorded.

Expedition Details

Field	Value
ID	2270
Imported	2026-03-06 18:04:49.359634
Expedition ID	EVER97126
Peak ID	EVER
Year	1997
Season	1
Host Country	1
Route 1	S Col-SE Ridge
Route 2	-
Route 3	-
Route 4	-
Nationality	UK
Leaders	Malcolm Duff
Sponsor	Ascent Everest Expedition
Success 1	True
Success 2	False
Success 3	False
Success 4	False
Ascent 1	263,269
Ascent 2	-
Ascent 3	-
Ascent 4	-
Claimed	False
Disputed	False
Countries	Australia, Mexico
Approach	-
Basecamp Date	1997-04-03
Summit Date	1997-05-23
Summit Time	0945
Summit Days	50
Total Days	0
Termination Date	-
Termination Reason	1
Termination Notes	-
High Point (m)	8849
Traverse	False
Ski	False
Paraglide	False
Camps	4
Fixed Rope (m)	0
Total Members	7
Summit Members	2
Member Deaths	1
Total Hired	6
Summit Hired	3
Hired Deaths	0
No Hired	False
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Taken	False
O2 Unknown	False
Other Summits	-
Campsites	BC(03/04,5350m),C1(07/04,6100m),C2(15/04,6400m),C3(24/04,7300m),C4(22/05,7900m),Smt(23,27/05)
Route Notes	C2 in Western Cwm C3 on Lhotse Face C4 at South Col. Delgado started for top at 11:20 pm on 22nd with Tenzing, who was carrying 4 oxygen bottles and using oxygen himself; at about 8500m at 3:00 am Delgado started to use oxygen and kept using it till return from summit and met Rodriguez at South Summit on his way up at 11:30 am (after Delgado spent 1-1/2 hours on top) and he was perfectly well but his oxygen almost finished; Delgado gave him Delgado's bottle and so Delgado finished his descent without it till 8500m where found a bottle which he used it till it used up almost at Col, where there was more. 26th May Muir's party left col 10:00-11:00 pm, on top at 10:30 am 27th (all 3 used oxygen) and returned safely to Col. Sherpa summiters: Keepa, Kharikhola, Everest twice before and other 8000m Tenzing, Thami, Everest 3 times before Dorje, Everest 5 times before (aka Dorje "Lambu" - Lambu means tall in Nepali) Jon Tinker, OTT Everest S Leader - 30 May 97 Best guess as to cause of Mal Duff's death is heart attack or something similar to cerebral thrombosis. He was found lying on his side with a book in his hands. No smell of liquor on him, no bottle in his tent although he was a heavy drinker. (Duff was best man at Tinker's wedding). Dr. Yuri Contreras, (H Todd Team) - 31 May 97 Duff's death very probably due to heart attack.
Accidents	Duff probably died of heart attack on 22-23 April
Achievement	1st ascent by Australian woman
Agency	Arun Treks
Commercial Route	True
Standard Route	True
Primary Route	False
Primary Member	False
Primary Reference	-
Primary ID	-
Checksum	2452814
Year	1997
Summit Success	True
O2 Summary	Used
Route (lowercase)	s col-se ridge

Members

Field	Value
ID	12892
Imported	2026-03-06 18:06:05.675609
Expedition ID	EVER97126
Member ID	03
Peak ID	EVER
Year	1997
Season	1
First Name	Michael
Last Name	Burns
Sex	M
Age	0
Birth Date	-
Year of Birth	1965
Calculated Age	31
Citizenship	UK
Status	BC Manager
Residence	Glasgow, Scotland
Occupation	Engineer
Leader	False
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	2436846
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	michael burns
Year of Birth	1965
Year	1997
Age at Expedition	32
Role	BC Only

Field	Value
ID	12893
Imported	2026-03-06 18:06:05.675609
Expedition ID	EVER97126
Member ID	04
Peak ID	EVER
Year	1997
Season	1
First Name	Luis Javier
Last Name	Corona
Sex	M
Age	0
Birth Date	-
Year of Birth	1971
Calculated Age	26
Citizenship	Mexico
Status	Climber
Residence	Mexico City, Mexico
Occupation	Construction company director
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	False
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	C3 only
Necrology	-
Summit Bid	0
Summit Term	0
HCN	0
Checksum	2438968
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	luis javier corona
Year of Birth	1971
Year	1997
Age at Expedition	26
Role	Member

Field	Value
ID	12894
Imported	2026-03-06 18:06:05.675609
Expedition ID	EVER97126
Member ID	05
Peak ID	EVER
Year	1997
Season	1
First Name	Andres
Last Name	Delgado Calderon
Sex	M
Age	0
Birth Date	-
Year of Birth	1969
Calculated Age	27
Citizenship	Mexico
Status	Climber
Residence	Mexico City, Mexico
Occupation	Alpine guide
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)	8849
Summit Date 1	1997-05-23
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0945
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	263
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	At & above 8500m
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	(1969-2006) In Oct 2006 disappeared on Changabang
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2438326
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	andres delgado calderon
Year of Birth	1969
Year	1997
Age at Expedition	28
Role	Member

Field	Value
ID	12895
Imported	2026-03-06 18:06:05.675609
Expedition ID	EVER97126
Member ID	01
Peak ID	EVER
Year	1997
Season	1
First Name	Malcolm (Mal)
Last Name	Duff
Sex	M
Age	0
Birth Date	-
Year of Birth	1953
Calculated Age	43
Citizenship	UK
Status	Leader
Residence	Culross, Fife, Scotland
Occupation	Alpinist
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	True
Death Date	1997-04-22
Death Time	-
Death Type	10
Death Height (m)	5350
Death Class	2
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	Died at BC of apparent heart attack night of 22/23 April
Member Notes	-
Necrology	(1953-1997) Died 22 Apr 1997 at Everest BC from heart attack
Summit Bid	1
Summit Term	5
HCN	0
Checksum	2432406
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	malcolm (mal) duff
Year of Birth	1953
Year	1997
Age at Expedition	44
Role	Leader

Field	Value
ID	12896
Imported	2026-03-06 18:06:05.675609
Expedition ID	EVER97126
Member ID	06
Peak ID	EVER
Year	1997
Season	1
First Name	Carlos
Last Name	Guevara Perada
Sex	M
Age	0
Birth Date	-
Year of Birth	1973
Calculated Age	23
Citizenship	Mexico
Status	Climber
Residence	Mexico City, Mexico
Occupation	Telecommunications 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	False
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	C3 only
Necrology	-
Summit Bid	0
Summit Term	0
HCN	0
Checksum	2439880
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	carlos guevara perada
Year of Birth	1973
Year	1997
Age at Expedition	24
Role	Member

Field	Value
ID	12897
Imported	2026-03-06 18:06:05.675609
Expedition ID	EVER97126
Member ID	07
Peak ID	EVER
Year	1997
Season	1
First Name	Brigitte
Last Name	Muir
Sex	F
Age	0
Birth Date	-
Year of Birth	1958
Calculated Age	38
Citizenship	Australia
Status	Climber
Residence	Natimuk, Victoria, Australia
Occupation	Tour operator
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)	8849
Summit Date 1	1997-05-27
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1030
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	269
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
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	2434355
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	brigitte muir
Year of Birth	1958
Year	1997
Age at Expedition	39
Role	Member

Field	Value
ID	12898
Imported	2026-03-06 18:06:05.675609
Expedition ID	EVER97126
Member ID	02
Peak ID	EVER
Year	1997
Season	1
First Name	Michael J. (Mike)
Last Name	Trueman
Sex	M
Age	0
Birth Date	-
Year of Birth	1952
Calculated Age	44
Citizenship	UK
Status	Deputy Leader
Residence	Midhurst, W Surrey, England
Occupation	Alpine guide
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	False
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	2432108
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	michael j. (mike) trueman
Year of Birth	1952
Year	1997
Age at Expedition	45
Role	Deputy

Field	Value
ID	12899
Imported	2026-03-06 18:06:05.675609
Expedition ID	EVER97126
Member ID	10
Peak ID	EVER
Year	1997
Season	1
First Name	Tenzing (Tenzen, Tenzi)
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	1964
Calculated Age	32
Citizenship	Nepal
Status	H-A Worker
Residence	Thami, Khumbu
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)	8849
Summit Date 1	1997-05-23
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0945
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	263
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
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	Born Aug-Sep 1964; 4th ascent of Everest
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2436524
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	tenzing (tenzen, tenzi) sherpa
Year of Birth	1964
Year	1997
Age at Expedition	33
Role	Hired

Field	Value
ID	12900
Imported	2026-03-06 18:06:05.675609
Expedition ID	EVER97126
Member ID	09
Peak ID	EVER
Year	1997
Season	1
First Name	Kipa/Keepa
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	34
Citizenship	Nepal
Status	H-A Worker
Residence	Hille (Kharikhola), Solukhumbu
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)	8849
Summit Date 1	1997-05-27
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1030
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	269
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
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	3rd ascent of Everest
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	-142
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	kipa/keepa sherpa
Year of Birth	-
Year	1997
Age at Expedition	-
Role	Hired

Field	Value
ID	12901
Imported	2026-03-06 18:06:05.675609
Expedition ID	EVER97126
Member ID	08
Peak ID	EVER
Year	1997
Season	1
First Name	Dorje (Dorje Lambu, Big Dorje)
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	1965
Calculated Age	31
Citizenship	Nepal
Status	H-A Worker
Residence	Thamo, Khumbu
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)	8849
Summit Date 1	1997-05-27
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1030
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	269
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
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	6th ascent of Everest
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2436928
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	dorje (dorje lambu, big dorje) sherpa
Year of Birth	1965
Year	1997
Age at Expedition	32
Role	Hired

10 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Michael Burns	M	1965	UK	BC Manager	Glasgow, Scotland	Engineer	Details Other expeditions
Luis Javier Corona	M	1971	Mexico	Climber	Mexico City, Mexico	Construction company director	Details Other expeditions
Andres Delgado Calderon	M	1969	Mexico	Climber	Mexico City, Mexico	Alpine guide	Details Other expeditions
Malcolm (Mal) Duff	M	1953	UK	Leader	Culross, Fife, Scotland	Alpinist	Details Other expeditions
Carlos Guevara Perada	M	1973	Mexico	Climber	Mexico City, Mexico	Telecommunications engineer	Details Other expeditions
Brigitte Muir	F	1958	Australia	Climber	Natimuk, Victoria, Australia	Tour operator	Details Other expeditions
Michael J. (Mike) Trueman	M	1952	UK	Deputy Leader	Midhurst, W Surrey, England	Alpine guide	Details Other expeditions
Tenzing (Tenzen, Tenzi) Sherpa	M	1964	Nepal	H-A Worker	Thami, Khumbu	-	Details Other expeditions
Kipa/Keepa Sherpa	M	-	Nepal	H-A Worker	Hille (Kharikhola), Solukhumbu	-	Details Other expeditions
Dorje (Dorje Lambu, Big Dorje) Sherpa	M	1965	Nepal	H-A Worker	Thamo, Khumbu	-	Details Other expeditions

References

Field	Value
ID	3210
Imported	2026-03-06 18:06:36.307770
Expedition ID	EVER97126
Reference ID	01
Year	1997
Type	2
Journal	AAJ
Author	Hawley, Elizabeth
Title	-
Publisher	-
Publication Date	1998
Language	-
Citation	72:306-308 (1998)
Yak 94	-
Notes	-

Field	Value
ID	5096
Imported	2026-03-06 18:06:36.307770
Expedition ID	EVER97126
Reference ID	02
Year	1997
Type	3
Journal	HIGH
Author	-
Title	-
Publisher	-
Publication Date	1997
Language	-
Citation	179:26 (Oct 1997)
Yak 94	-
Notes	-

Field	Value
ID	8157
Imported	2026-03-06 18:06:36.307770
Expedition ID	EVER97126
Reference ID	03
Year	1997
Type	1
Journal	-
Author	Muir, Brigitte
Title	The Wind In My Hair
Publisher	Viking, Ringwood, Victoria, Australia
Publication Date	1998
Language	-
Citation	-
Yak 94	-
Notes	-

Field	Value
ID	10834
Imported	2026-03-06 18:06:36.307770
Expedition ID	EVER97126
Reference ID	04
Year	1997
Type	5
Journal	-
Author	-
Title	http://publications.americanalpineclub.org/articles/12199830603/Asia-Nepal-Everest-in-the-Pre-Monsoon
Publisher	-
Publication Date	-
Language	-
Citation	-
Yak 94	-
Notes	-

4 recorded references.

Expedition ID	Journal	Author	Title	Publisher	Citation	Yak 94
EVER97126	AAJ	Hawley, Elizabeth	-	-	72:306-308 (1998)	-
EVER97126	HIGH	-	-	-	179:26 (Oct 1997)	-
EVER97126	-	Muir, Brigitte	The Wind In My Hair	Viking, Ringwood, Victoria, Australia	-	-
EVER97126	-	-	http://publications.americanalpineclub.org/articles/12199830603/Asia-Nepal-Everest-in-the-Pre-Monsoon	-	-	-