Lhotse Face
E531135
Lhotse Face is a steep, glaciated wall of ice and rock on the western flank of Lhotse that forms a key and notoriously challenging section of the standard climbing route to the summit of Mount Everest.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Lhotse Face canonical | 3 |
| Lhotse face (higher on the route) | 1 |
| West Face and Lhotse Couloir | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5618769 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Lhotse Face Context triple: [Western Cwm, upperBoundary, Lhotse Face]
-
A.
Broad Peak
Broad Peak is one of the world’s highest mountains, an 8,000-meter-class peak in the Karakoram range on the border of Pakistan and China, renowned for its broad, extended summit ridge.
-
B.
North Ridge of K2
The North Ridge of K2 is a major, technically demanding climbing route on the world’s second-highest mountain, rising from the Chinese side and known for its extreme altitude, exposure, and objective hazards.
-
C.
Muztagh Tower
Muztagh Tower is a striking, steep granite peak in the Karakoram range on the Pakistan–China border, renowned among mountaineers for its dramatic shape and technical climbing challenges.
-
D.
Whymper summit
Whymper summit is the principal peak of Ecuador’s Chimborazo volcano, notable for being one of the farthest points from Earth’s center due to the planet’s equatorial bulge.
-
E.
Bride Peak
Bride Peak is an alternate name for Chogolisa, a prominent and challenging mountain in the Karakoram range of Pakistan.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Lhotse Face Target entity description: Lhotse Face is a steep, glaciated wall of ice and rock on the western flank of Lhotse that forms a key and notoriously challenging section of the standard climbing route to the summit of Mount Everest.
-
A.
Broad Peak
Broad Peak is one of the world’s highest mountains, an 8,000-meter-class peak in the Karakoram range on the border of Pakistan and China, renowned for its broad, extended summit ridge.
-
B.
North Ridge of K2
The North Ridge of K2 is a major, technically demanding climbing route on the world’s second-highest mountain, rising from the Chinese side and known for its extreme altitude, exposure, and objective hazards.
-
C.
Muztagh Tower
Muztagh Tower is a striking, steep granite peak in the Karakoram range on the Pakistan–China border, renowned among mountaineers for its dramatic shape and technical climbing challenges.
-
D.
Whymper summit
Whymper summit is the principal peak of Ecuador’s Chimborazo volcano, notable for being one of the farthest points from Earth’s center due to the planet’s equatorial bulge.
-
E.
Bride Peak
Bride Peak is an alternate name for Chogolisa, a prominent and challenging mountain in the Karakoram range of Pakistan.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
glaciated mountain face
ⓘ
ice wall ⓘ mountaineering route section ⓘ |
| accessedFrom | Camp II on Mount Everest South Col route NERFINISHED ⓘ |
| approximateHeightDifference |
1100 metres
ⓘ
3600 feet ⓘ |
| climbedUsing |
fixed ropes
ⓘ
front-point crampon technique ⓘ |
| climbingSeason |
post-monsoon (autumn)
ⓘ
pre-monsoon (spring) ⓘ |
| containsFeature |
crevasses
ⓘ
rock bands ⓘ seracs ⓘ |
| firstClimbedAsPartOf | 1953 British Mount Everest expedition NERFINISHED ⓘ |
| formsPartOfRouteTo |
Lhotse
NERFINISHED
ⓘ
Mount Everest NERFINISHED ⓘ |
| geologicalType | glacial ice overlying metamorphic rock ⓘ |
| hasHighCampOn | Camp III on Mount Everest South Col route NERFINISHED ⓘ |
| hazard |
altitude sickness
ⓘ
avalanches ⓘ extreme cold ⓘ falling climbers ⓘ icefall ⓘ |
| isOnStandardRoute |
South Col route on Mount Everest
NERFINISHED
ⓘ
normal route on Lhotse ⓘ |
| knownFor |
exposure to high winds
ⓘ
extreme altitude ⓘ objective hazards from ice and rockfall ⓘ steepness ⓘ |
| liesBetween |
South Col
NERFINISHED
ⓘ
Western Cwm NERFINISHED ⓘ |
| locatedInCountry | Nepal NERFINISHED ⓘ |
| locatedInMountainRange | Himalayas NERFINISHED ⓘ |
| locatedInRegion | Khumbu NERFINISHED ⓘ |
| locatedInSubrange | Mahalangur Himal NERFINISHED ⓘ |
| locatedOnFlankOf | Lhotse west face NERFINISHED ⓘ |
| lowerElevationApprox | 6500 metres ⓘ |
| notableFor | being one of the most technically demanding sections of the Everest South Col route ⓘ |
| orientation | west-facing ⓘ |
| partOf | Lhotse NERFINISHED ⓘ |
| slopeAngleRange | 40 to 50 degrees ⓘ |
| surfaceType |
blue ice
ⓘ
hard glacial ice ⓘ |
| typicalAscentStyle |
expedition-style climbing
ⓘ
guided commercial expeditions ⓘ |
| upperElevationApprox | 7600 metres ⓘ |
| usedBy |
Everest climbers from the Nepal side
ⓘ
Lhotse climbers from the normal route ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Lhotse Face Description of subject: Lhotse Face is a steep, glaciated wall of ice and rock on the western flank of Lhotse that forms a key and notoriously challenging section of the standard climbing route to the summit of Mount Everest.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Lhotse face (higher on the route)
subject surface form:
Lhotse
this entity surface form:
West Face and Lhotse Couloir