Big Hole maar
E628083
Big Hole maar is a large volcanic crater in Oregon’s Fort Rock–Christmas Lake Valley, formed by explosive interactions between rising magma and groundwater.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Big Hole maar canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6912916 — 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: Big Hole maar Context triple: [Fort Rock–Christmas Lake Valley, contains, Big Hole maar]
-
A.
the Big Hole
The Big Hole is a massive hand-dug open-pit diamond mine in Kimberley, South Africa, famed as one of the largest excavations ever made by humans.
-
B.
Ellery Creek Big Hole
Ellery Creek Big Hole is a popular waterhole and scenic gorge in Australia’s Northern Territory, known for its striking red rock formations and permanent swimming spot within the West MacDonnell Ranges.
-
C.
Gros Ventre
Gros Ventre refers to a Native American tribe of the Northern Plains, traditionally associated with areas of present-day Montana and Alberta and known for their nomadic buffalo-hunting culture.
-
D.
Blue Mesa
Blue Mesa is a striking badlands area in Arizona known for its colorful, banded rock formations and petrified wood within Petrified Forest National Park.
-
E.
Dusy Basin
Dusy Basin is a high-elevation alpine basin in California’s Sierra Nevada, known for its numerous lakes, granite scenery, and popularity among backpackers and climbers.
- 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: Big Hole maar Target entity description: Big Hole maar is a large volcanic crater in Oregon’s Fort Rock–Christmas Lake Valley, formed by explosive interactions between rising magma and groundwater.
-
A.
the Big Hole
The Big Hole is a massive hand-dug open-pit diamond mine in Kimberley, South Africa, famed as one of the largest excavations ever made by humans.
-
B.
Ellery Creek Big Hole
Ellery Creek Big Hole is a popular waterhole and scenic gorge in Australia’s Northern Territory, known for its striking red rock formations and permanent swimming spot within the West MacDonnell Ranges.
-
C.
Gros Ventre
Gros Ventre refers to a Native American tribe of the Northern Plains, traditionally associated with areas of present-day Montana and Alberta and known for their nomadic buffalo-hunting culture.
-
D.
Blue Mesa
Blue Mesa is a striking badlands area in Arizona known for its colorful, banded rock formations and petrified wood within Petrified Forest National Park.
-
E.
Dusy Basin
Dusy Basin is a high-elevation alpine basin in California’s Sierra Nevada, known for its numerous lakes, granite scenery, and popularity among backpackers and climbers.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
maar
ⓘ
volcanic crater ⓘ |
| access | remote area of Fort Rock–Christmas Lake Valley ⓘ |
| age | Quaternary ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| currentStatus | extinct volcano ⓘ |
| elevation | approximately 1,400–1,500 meters above sea level ⓘ |
| eruptionStyle | phreatomagmatic ⓘ |
| eruptiveOrigin | single eruptive center (monogenetic) ⓘ |
| featureType | monogenetic volcano ⓘ |
| formationProcess |
explosive interaction of magma and groundwater
ⓘ
phreatomagmatic eruption ⓘ |
| geologicAge | Late Pleistocene (approximate) ⓘ |
| geologicalProvince | Basin and Range Province NERFINISHED ⓘ |
| hasFeature |
broad crater floor
ⓘ
steep crater walls ⓘ tuff ring ⓘ |
| hydrology | formed by interaction with groundwater ⓘ |
| landformCategory |
impact-like crater (volcanic origin)
ⓘ
volcanic landform ⓘ |
| lastEruption | Pleistocene (approximate) ⓘ |
| locatedIn |
Basin and Range Province
NERFINISHED
ⓘ
Fort Rock–Christmas Lake Valley NERFINISHED ⓘ Lake County, Oregon NERFINISHED ⓘ Oregon ⓘ |
| locatedInProtectedArea | public lands of south-central Oregon (general) ⓘ |
| locatedOnContinent | North America ⓘ |
| mountainRange | Fort Rock–Christmas Lake Valley volcanic field NERFINISHED ⓘ |
| near |
Christmas Valley, Oregon
NERFINISHED
ⓘ
Fort Rock, Oregon NERFINISHED ⓘ |
| notableFor |
example of phreatomagmatic volcanism in Oregon
ⓘ
large maar crater morphology ⓘ |
| partOf | Oregon High Lava Plains volcanic region NERFINISHED ⓘ |
| region | Fort Rock–Christmas Lake Valley, south-central Oregon NERFINISHED ⓘ |
| relatedFeature |
Fort Rock maar
NERFINISHED
ⓘ
Hole-in-the-Ground maar NERFINISHED ⓘ other maars of the Fort Rock–Christmas Lake Valley volcanic field ⓘ |
| rockType | basaltic ⓘ |
| scientificDiscipline |
geomorphology
ⓘ
volcanology ⓘ |
| surfaceExpression | broad, low-relief volcanic crater ⓘ |
| volcanicArcOrBelt | Cascade Volcanic Arc (broad region) NERFINISHED ⓘ |
| volcanicField | Fort Rock–Christmas Lake Valley volcanic field NERFINISHED ⓘ |
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: Big Hole maar Description of subject: Big Hole maar is a large volcanic crater in Oregon’s Fort Rock–Christmas Lake Valley, formed by explosive interactions between rising magma and groundwater.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.