Serpent Mound
E250262
Serpent Mound is a prehistoric effigy mound in Ohio, renowned for its serpent-shaped earthwork attributed to ancient Indigenous cultures and considered one of North America’s most significant archaeological sites.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Serpent Mound canonical | 2 |
| Serpent Mound Disturbance | 1 |
| Serpent Mound State Memorial | 1 |
| Serpent Mound State Memorial vicinity | 1 |
| Serpent Mound plateau | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2258870 — 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: Serpent Mound Context triple: [Ohio History Connection, operatesHistoricSite, Serpent Mound]
-
A.
Turner Earthworks
Turner Earthworks is a prehistoric Native American earthwork complex in Ohio associated with the Hopewell culture, known for its geometric mounds and ceremonial significance.
-
B.
Angel Mounds
Angel Mounds is a significant pre-Columbian archaeological site in Indiana that preserves the remains of a large Mississippian culture town and its earthen platform mounds.
-
C.
Mound City
Mound City is a historical nickname for St. Louis, Missouri, referencing the region’s ancient Native American earthwork mounds.
-
D.
Seip Earthworks
Seip Earthworks is a major prehistoric Native American earthwork complex in Ohio, notable for its large geometric enclosures and burial mounds built by the Hopewell culture.
-
E.
Kincaid Mounds
Kincaid Mounds is a significant pre-Columbian archaeological site in the Ohio River Valley, known for its large earthen platform mounds and role as a regional center of Mississippian culture.
- 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: Serpent Mound Target entity description: Serpent Mound is a prehistoric effigy mound in Ohio, renowned for its serpent-shaped earthwork attributed to ancient Indigenous cultures and considered one of North America’s most significant archaeological sites.
-
A.
Turner Earthworks
Turner Earthworks is a prehistoric Native American earthwork complex in Ohio associated with the Hopewell culture, known for its geometric mounds and ceremonial significance.
-
B.
Angel Mounds
Angel Mounds is a significant pre-Columbian archaeological site in Indiana that preserves the remains of a large Mississippian culture town and its earthen platform mounds.
-
C.
Mound City
Mound City is a historical nickname for St. Louis, Missouri, referencing the region’s ancient Native American earthwork mounds.
-
D.
Seip Earthworks
Seip Earthworks is a major prehistoric Native American earthwork complex in Ohio, notable for its large geometric enclosures and burial mounds built by the Hopewell culture.
-
E.
Kincaid Mounds
Kincaid Mounds is a significant pre-Columbian archaeological site in the Ohio River Valley, known for its large earthen platform mounds and role as a regional center of Mississippian culture.
- F. None of above. chosen
Statements (55)
| Predicate | Object |
|---|---|
| instanceOf |
archaeological site
ⓘ
effigy mound ⓘ prehistoric earthwork ⓘ |
| alignedWith |
equinox sunrise
ⓘ
lunar standstills ⓘ summer solstice sunset ⓘ |
| builtOn |
Serpent Mound Disturbance
ⓘ
linked to:
Serpent Mound
crater structure ⓘ |
| coManagedBy | Arc of Appalachia Preserve System ⓘ |
| consideredSacredBy | some Native American communities ⓘ |
| cultureAttributedTo |
Adena culture
ⓘ
Fort Ancient culture ⓘ ancient Indigenous cultures of North America ⓘ |
| designatedAs | National Historic Landmark ⓘ |
| earlierHypothesis | Adena period construction (circa 800 BCE–100 CE) ⓘ |
| estimatedConstructionPeriod | Late Prehistoric period ⓘ |
| hasAstronomicalAlignments | true ⓘ |
| hasFeature |
coiled tail
ⓘ
open mouth ⓘ oval feature in front of mouth ⓘ |
| hasNearbyBurialMounds | true ⓘ |
| hasObservationTower | true ⓘ |
| hasUncertainAttribution | true ⓘ |
| hasVisitorCenter | true ⓘ |
| height |
about 0.3 to 1 meter
ⓘ
about 1 to 3 feet ⓘ |
| interpretedAs |
serpent holding the sun
ⓘ
serpent swallowing an egg ⓘ |
| length |
approximately 1,300 feet
ⓘ
approximately 400 meters ⓘ |
| listedOn | National Register of Historic Places ⓘ |
| locatedIn |
Adams County, Ohio
ⓘ
Ohio ⓘ United States ⓘ
linked to:
United States of America
|
| locatedOn |
Serpent Mound plateau
ⓘ
linked to:
Serpent Mound
|
| managedBy | Ohio History Connection ⓘ |
| material | earth ⓘ |
| NationalHistoricLandmarkDesignationYear | 1964 ⓘ |
| near | Brush Creek ⓘ |
| nearbyBurialMoundsAttributedTo | Adena culture ⓘ |
| openToPublic | true ⓘ |
| possibleFunction |
astronomical marker
ⓘ
ceremonial site ⓘ religious or cosmological symbol ⓘ |
| protectedAs | cultural heritage site ⓘ |
| radiocarbonDatingSuggests | construction around 11th century CE (Fort Ancient period) ⓘ |
| SerpentMoundDisturbanceType | ancient impact or cryptoexplosion structure (debated) ⓘ |
| shape | serpent ⓘ |
| significance | one of North America’s most significant archaeological sites ⓘ |
| subjectOf |
Indigenous oral traditions
ⓘ
archaeological research ⓘ astronomical studies ⓘ |
| touristAttraction | true ⓘ |
| width |
about 20 to 25 feet
ⓘ
about 6 to 7.5 meters ⓘ |
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: Serpent Mound Description of subject: Serpent Mound is a prehistoric effigy mound in Ohio, renowned for its serpent-shaped earthwork attributed to ancient Indigenous cultures and considered one of North America’s most significant archaeological sites.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Serpent Mound
linked to: Serpent Mound
linked to: Serpent Mound
linked to: Serpent Mound