Octagon Earthworks
E822370
Octagon Earthworks is a large, geometrically precise ancient earthwork complex in Newark, Ohio, built by the Hopewell culture and noted for its sophisticated astronomical alignments.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Octagon Earthworks canonical | 2 |
| Octagon Earthworks State Memorial | 1 |
| Wright Earthworks | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9693731 — 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: Octagon Earthworks Context triple: [Newark Earthworks, hasPart, Octagon Earthworks]
-
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.
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.
-
C.
Spruce Hill Earthworks
Spruce Hill Earthworks is a prehistoric Native American earthwork complex in Ohio, notable for its large hilltop enclosure associated with the Hopewell culture.
-
D.
Great Circle Earthworks
The Great Circle Earthworks is a large, circular prehistoric mound complex in Newark, Ohio, built by the Hopewell culture and considered one of the most impressive ancient earthwork enclosures in North America.
-
E.
Hopeton Earthworks
Hopeton Earthworks is a major prehistoric Hopewell culture earthwork complex in Ohio, notable for its large geometric embankments and archaeological significance.
- 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: Octagon Earthworks Target entity description: Octagon Earthworks is a large, geometrically precise ancient earthwork complex in Newark, Ohio, built by the Hopewell culture and noted for its sophisticated astronomical alignments.
-
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.
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.
-
C.
Spruce Hill Earthworks
Spruce Hill Earthworks is a prehistoric Native American earthwork complex in Ohio, notable for its large hilltop enclosure associated with the Hopewell culture.
-
D.
Great Circle Earthworks
The Great Circle Earthworks is a large, circular prehistoric mound complex in Newark, Ohio, built by the Hopewell culture and considered one of the most impressive ancient earthwork enclosures in North America.
-
E.
Hopeton Earthworks
Hopeton Earthworks is a major prehistoric Hopewell culture earthwork complex in Ohio, notable for its large geometric embankments and archaeological significance.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Hopewell culture earthwork
ⓘ
ancient earthwork complex ⓘ archaeological site ⓘ |
| astronomicalAlignmentWith |
lunar standstills
ⓘ
major lunar standstill ⓘ minor lunar standstill ⓘ |
| builtBy |
Hopewell people
ⓘ
linked to:
Hopewell tradition
|
| category |
Mounds in Ohio
ⓘ
Pre-Columbian archaeological sites in the United States ⓘ |
| city | Newark ⓘ |
| constructionMaterial | earth ⓘ |
| coordinateSystem | aligned to lunar cycles ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| culture |
Hopewell culture
ⓘ
linked to:
Hopewell tradition
|
| currentUse |
part of a golf course
ⓘ
public heritage site ⓘ |
| estimatedConstructionDate | circa 100 BCE–400 CE ⓘ |
| hasPart |
circular earthwork
ⓘ
connecting avenues ⓘ observatory mound ⓘ octagonal earthwork ⓘ |
| heritageDesignation |
Ohio State Memorial
ⓘ
U.S. National Historic Landmark ⓘ
linked to:
National Historic Landmark
UNESCO World Heritage Site ⓘ |
| includedIn | UNESCO World Heritage List in 2023 ⓘ |
| locatedIn |
Licking County, Ohio
NERFINISHED
ⓘ
Newark, Ohio ⓘ United States ⓘ
linked to:
United States of America
|
| managedBy | Ohio History Connection ⓘ |
| near |
Great Circle Earthworks
ⓘ
Wright Earthworks ⓘ |
| notedFor |
geometric precision
ⓘ
large scale earthworks ⓘ sophisticated astronomical alignments ⓘ |
| openToPublic | yes ⓘ |
| orientationToward |
moonrise positions
ⓘ
moonset positions ⓘ |
| partOf |
Hopewell Ceremonial Earthworks
ⓘ
Newark Earthworks ⓘ Newark Earthworks State Memorial ⓘ
linked to:
Newark Earthworks
|
| shape | octagon ⓘ |
| significance |
important prehistoric astronomical observatory
ⓘ
major Hopewell ceremonial center ⓘ |
| state | Ohio ⓘ |
| timePeriod | Middle Woodland period ⓘ |
| usedFor |
astronomical observations
ⓘ
ceremonial purposes ⓘ ritual activities ⓘ |
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: Octagon Earthworks Description of subject: Octagon Earthworks is a large, geometrically precise ancient earthwork complex in Newark, Ohio, built by the Hopewell culture and noted for its sophisticated astronomical alignments.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Octagon Earthworks
linked to: Octagon Earthworks