Southeast Ridge of Mount Everest

E594768

climbing route section mountain ridge

The Southeast Ridge of Mount Everest is the classic high-altitude ridgeline leading from the South Col to the summit, forming the final and most famous section of the standard climbing route on the mountain’s south side.

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All labels observed (2)

Label	Occurrences
South Col route on Mount Everest	2
Southeast Ridge of Mount Everest canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T6430109 — 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: Southeast Ridge of Mount Everest
Context triple: [South Col route, ascendsVia, Southeast Ridge of Mount Everest]

A. North Saddle of Everest
North Saddle of Everest is a high glaciated pass between Mount Everest and Changtse on the mountain’s north side, serving as the key access point for climbers ascending via the North Col route from Tibet.
B. Lhotse Face
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.
C. South-Southeast Ridge of K2
The South-Southeast Ridge of K2, commonly known as the Cesen Route, is a major climbing line on the world’s second-highest mountain that offers a slightly less technical but still highly dangerous alternative to the Abruzzi Spur.
D. 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.
E. Saltoro Ridge
Saltoro Ridge is a strategically significant mountain range in the eastern Karakoram, forming part of the disputed Siachen region between India and 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: Southeast Ridge of Mount Everest
Target entity description: The Southeast Ridge of Mount Everest is the classic high-altitude ridgeline leading from the South Col to the summit, forming the final and most famous section of the standard climbing route on the mountain’s south side.

A. North Saddle of Everest
North Saddle of Everest is a high glaciated pass between Mount Everest and Changtse on the mountain’s north side, serving as the key access point for climbers ascending via the North Col route from Tibet.
B. Lhotse Face
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.
C. South-Southeast Ridge of K2
The South-Southeast Ridge of K2, commonly known as the Cesen Route, is a major climbing line on the world’s second-highest mountain that offers a slightly less technical but still highly dangerous alternative to the Abruzzi Spur.
D. 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.
E. Saltoro Ridge
Saltoro Ridge is a strategically significant mountain range in the eastern Karakoram, forming part of the disputed Siachen region between India and Pakistan.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	climbing route section ⓘ mountain ridge ⓘ
alsoKnownAs	upper Southeast Ridge route ⓘ
approximateSummitDayDuration	8–18 hours round trip depending on conditions ⓘ
approximateSummitDayVerticalGain	900–1000 metres ⓘ
climbedWith	fixed ropes ⓘ
climbingSeason	pre-monsoon (spring) ⓘ
climbingStyleCommon	guided commercial expeditions ⓘ
commonlyUsedEquipment	supplemental oxygen ⓘ
contains	Balcony ⓘ Cornice Traverse ⓘ Hillary Step (historical feature) NERFINISHED ⓘ South Summit of Mount Everest NERFINISHED ⓘ summit snow slopes ⓘ
countryOnNorthSide	China NERFINISHED ⓘ
countryOnSouthSide	Nepal NERFINISHED ⓘ
difficulty	extreme ⓘ
elevationAtStartApprox	7900–8000 metres above sea level ⓘ
elevationAtSummit	8848.86 metres above sea level ⓘ
famousFor	being the most commonly used final route to the summit of Everest ⓘ
firstAscentBy	Edmund Hillary NERFINISHED ⓘ Tenzing Norgay NERFINISHED ⓘ
firstAscentDate	29 May 1953 ⓘ
firstAscentExpedition	1953 British Mount Everest expedition NERFINISHED ⓘ
hazard	altitude sickness ⓘ avalanches ⓘ cerebral and pulmonary edema ⓘ falls from exposure ⓘ severe weather changes ⓘ
leadsTo	summit of Mount Everest ⓘ
liesAbove	South Col Camp (Camp IV) NERFINISHED ⓘ
locatedIn	Himalayas ⓘ Mahalangur Himal NERFINISHED ⓘ border region of Nepal and China ⓘ
locatedOn	Mount Everest NERFINISHED ⓘ
notableFeature	exposure to high winds and low temperatures ⓘ very thin air near the summit ⓘ
partOf	standard South Col route on Mount Everest ⓘ
secondaryClimbingSeason	post-monsoon (autumn) ⓘ
sectionBetween	Balcony and South Summit NERFINISHED ⓘ South Col and Balcony ⓘ South Summit and main summit ⓘ
standardRoute	South Col–Southeast Ridge route NERFINISHED ⓘ
startsFrom	South Col NERFINISHED ⓘ
typicalUse	final summit push on south side standard route ⓘ
usedFor	high-altitude climbing ⓘ mountaineering ⓘ

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

South Col route → ascendsVia → Southeast Ridge of Mount Everest ⓘ

Swiss Mount Everest/Lhotse Expedition 1956 → usedRoute → Southeast Ridge of Mount Everest ⓘ

this entity surface form: South Col route on Mount Everest

Khumbu Glacier → primaryClimbingRouteFor → Southeast Ridge of Mount Everest ⓘ