Cwm Idwal
E853192
Cwm Idwal is a glacial cirque and popular hiking destination in Snowdonia, North Wales, renowned for its dramatic cliffs, lake, and classic rock formations studied by geologists.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Cwm Idwal canonical | 10 |
How this entity was disambiguated
This entity first appeared as the object of triple T10270887 — 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: Cwm Idwal Context triple: [Ogwen Valley, hasGeologicalFeature, Cwm Idwal]
-
A.
Cwm Cynwyn
Cwm Cynwyn is a secluded glacial valley in the Brecon Beacons of Wales, known for its steep grassy slopes and dramatic mountain scenery.
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B.
Cwm
Cwm is a village in the Ebbw Valley in Blaenau Gwent, South Wales, historically associated with coal mining and the South Wales Valleys communities.
-
C.
Cwm Gwdi
Cwm Gwdi is a popular upland car park and access point in the Brecon Beacons used as a starting base for hikes onto the central Beacons peaks.
-
D.
Cwm Oergwm
Cwm Oergwm is a glacial valley in the Brecon Beacons of Wales, known for its steep sides, remote feel, and scenic mountain surroundings.
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E.
Cwm Sere
Cwm Sere is a glacial valley in the Brecon Beacons of Wales, known for its dramatic mountain scenery beneath peaks such as Cribyn and Pen y Fan.
- 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: Cwm Idwal Target entity description: Cwm Idwal is a glacial cirque and popular hiking destination in Snowdonia, North Wales, renowned for its dramatic cliffs, lake, and classic rock formations studied by geologists.
-
A.
Cwm Cynwyn
Cwm Cynwyn is a secluded glacial valley in the Brecon Beacons of Wales, known for its steep grassy slopes and dramatic mountain scenery.
-
B.
Cwm
Cwm is a village in the Ebbw Valley in Blaenau Gwent, South Wales, historically associated with coal mining and the South Wales Valleys communities.
-
C.
Cwm Gwdi
Cwm Gwdi is a popular upland car park and access point in the Brecon Beacons used as a starting base for hikes onto the central Beacons peaks.
-
D.
Cwm Oergwm
Cwm Oergwm is a glacial valley in the Brecon Beacons of Wales, known for its steep sides, remote feel, and scenic mountain surroundings.
-
E.
Cwm Sere
Cwm Sere is a glacial valley in the Brecon Beacons of Wales, known for its dramatic mountain scenery beneath peaks such as Cribyn and Pen y Fan.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
cwm
ⓘ
glacial cirque ⓘ hiking destination ⓘ tourist attraction ⓘ valley ⓘ |
| accessibleFrom |
A5 road in Snowdonia
ⓘ
linked to:
A5 road near Llyn Ogwen
|
| formedBy | Pleistocene glaciation ⓘ |
| hasBodyOfWater | Llyn Idwal ⓘ |
| hasClimbingArea | Idwal Slabs ⓘ |
| hasConservationStatus | National Nature Reserve ⓘ |
| hasDesignation | Site of Special Scientific Interest ⓘ |
| hasEcosystem |
montane heath
ⓘ
upland grassland ⓘ |
| hasFeature |
U-shaped valley form
ⓘ
classic rock formations ⓘ glacial lake ⓘ glacial moraines ⓘ hanging valley characteristics ⓘ rocky scree slopes ⓘ steep cliffs ⓘ |
| hasFlora | arctic-alpine plants ⓘ |
| hasGeology |
Ordovician volcanic rocks
ⓘ
rhyolite ⓘ slate ⓘ |
| hasNameElement |
Cwm
ⓘ
Idwal ⓘ |
| hasNameOrigin | Welsh language ⓘ |
| hasNearbyPeak |
Glyder Fach
ⓘ
Glyder Fawr ⓘ Tryfan ⓘ Y Garn ⓘ |
| hasTrailheadNear | Ogwen Cottage ⓘ |
| hasViewOf | Llyn Idwal ⓘ |
| knownFor |
dramatic mountain scenery
ⓘ
geological significance ⓘ glacial landforms ⓘ hiking and walking trails ⓘ rock climbing routes ⓘ |
| locatedIn |
Eryri National Park
ⓘ
Gwynedd ⓘ North Wales ⓘ Snowdonia ⓘ United Kingdom ⓘ Wales ⓘ |
| managedBy | Natural Resources Wales ⓘ |
| partOf | Glyderau ⓘ |
| popularWith |
geologists
ⓘ
hikers ⓘ nature photographers ⓘ rock climbers ⓘ |
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: Cwm Idwal Description of subject: Cwm Idwal is a glacial cirque and popular hiking destination in Snowdonia, North Wales, renowned for its dramatic cliffs, lake, and classic rock formations studied by geologists.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.