Lhotse Shar | 1955 SE side (reconnaissance)

A USA expedition to Lhotse Shar in 1955 via SE side (reconnaissance), led by Norman Dyhrenfurth. 2 members recorded.

Expedition Details

Field	Value
ID	2930
Imported	2026-03-06 18:04:49.359634
Expedition ID	LSHR55101
Peak ID	LSHR
Year	1955
Season	1
Host Country	1
Route 1	SE side (reconnaissance)
Route 2	-
Route 3	-
Route 4	-
Nationality	USA
Leaders	Norman Dyhrenfurth
Sponsor	International Himalayan Expedition 1955
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	Austria, Switzerland
Approach	-
Basecamp Date	-
Summit Date	-
Summit Time	-
Summit Days	0
Total Days	0
Termination Date	-
Termination Reason	12
Termination Notes	-
High Point (m)	0
Traverse	False
Ski	False
Paraglide	False
Camps	0
Fixed Rope (m)	0
Total Members	2
Summit Members	0
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	Climbed Island Peak (IMJA-553-01) and Palung Ri (PLNG-552-01); attempted Lhotse (LHOT-553-01)
Campsites	-
Route Notes	Expedition made no attempt to climb the mountain, according to Dhyrenfurth in the "America Alpine Journal," 1956, pg 8. Quote: "I look at the southern defenses of the east ridge convinced both of us (Dyrenfurth and Senn) that any attempt to establish a series of camps and to lead heavily-laden Sherpas through their would be suicidal. While you were studying about huge wall of steep ice, several avalanches broke off from high shell burying the only possible avenue of approach under masses of blue green ice. Even if one could reach the ridge, the route would be extremely long and exposed to the winds. The upper most part of the east ridge is very steep and undoubtedly heavily corniced, and the main summit of Lhotse could not be possibly reach that way."
Accidents	-
Achievement	-
Agency	-
Commercial Route	-
Standard Route	-
Primary Route	False
Primary Member	True
Primary Reference	True
Primary ID	LHOT55301
Checksum	2810
Year	1955
Summit Success	False
O2 Summary	None
Route (lowercase)	se side (reconnaissance)

Members

Field	Value
ID	26299
Imported	2026-03-06 18:06:05.675609
Expedition ID	LSHR55101
Member ID	01
Peak ID	LSHR
Year	1955
Season	1
First Name	Norman Guenter
Last Name	Dyhrenfurth
Sex	M
Age	0
Birth Date	-
Year of Birth	1918
Calculated Age	36
Citizenship	USA/Switzerland
Status	Leader
Residence	USA
Occupation	Film-maker
Leader	True
Deputy	False
Basecamp Only	False
Not to BC	True
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	(1918-2017) Died 24 Sept 2017 in Salzburg, Austria
Summit Bid	1
Summit Term	17
HCN	0
Checksum	2419769
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	norman guenter dyhrenfurth
Year of Birth	1918
Year	1955
Age at Expedition	37
Role	Leader

Field	Value
ID	26300
Imported	2026-03-06 18:06:05.675609
Expedition ID	LSHR55101
Member ID	02
Peak ID	LSHR
Year	1955
Season	1
First Name	Ernst
Last Name	Senn
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	0
Citizenship	Austria
Status	Climber
Residence	Innsbruck, Tirol, Austria
Occupation	-
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	True
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	-34
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	ernst senn
Year of Birth	-
Year	1955
Age at Expedition	-
Role	Member

2 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Norman Guenter Dyhrenfurth	M	1918	USA/Switzerland	Leader	USA	Film-maker	Details Other expeditions
Ernst Senn	M	-	Austria	Climber	Innsbruck, Tirol, Austria	-	Details Other expeditions

References

0 recorded references.