Fort Hill State Park
Why it's listed
Fort Hill is a prehistoric hilltop enclosure in Highland County, Ohio, rising 1283 feet above sea level on a butte-like formation capped with Berea sandstone. A stone and earthen wall about 1 5/8 miles long circles the summit and encloses roughly 40 acres. The wall varies from 6 to 15 feet high, is about 40 feet wide at the base, and is broken by 33 gateways. Three depressions inside are thought to be borrow pits. Two circular earthworks lie in the valley to the south, and one revealed the outline of a large rectangular building, possibly a workshop for stone implements. Excavations there produced pottery and flint points typical of the Hopewell culture, which probably built the site as a ceremonial center between 300 B.C. and 600 A.D. The state and the Ohio Historical Society began acquiring the land in 1932, and a site museum opened in 1968. About 400 acres of the 1200-acre memorial were listed for their prehistoric importance.
Significance in brief: The nomination calls Fort Hill a complete, unaltered and spectacularly large prehistoric Indian hilltop enclosure. Excavations at two circular enclosures in the valley produced pottery, flint spear points and other items characteristic of the Hopewell culture, suggesting Hopewell builders and a likely ceremonial purpose. It is one of six hilltop enclosures in southern Ohio, all apparently Hopewell work.
Machine-generated summary. This summary was generated by a language model from the official nomination document and has not been reviewed line by line by an editor. It may contain errors. Check the source document before relying on any detail. Source: nomination document (PDF) · National Archives catalog entry. NRHP reference 70000500, listed November 10, 1970. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence high).
Key facts
| Address | SE of Hillsboro on OH 41, Sinking Springs |
|---|---|
| County | Highland County |
| Listed | November 10, 1970 |
| Reference number | 70000500 |
| Resource type | Site |
| Period of significance | 300 B.C. - 600 A.D. |
| Areas of significance | Prehistoric |
| Level of significance | State |
| Status (as stated in the nomination) | Condition is stated as excellent and unaltered, on its original site, in public ownership and used as a park; a site museum opened in 1968. |
| Acreage | 400 |
| Coordinates | 39.11062, -83.40270 (NPS GIS) |
What listing means for this property
Sites (archaeological sites, battlefields, landscapes) are often listed with a restricted address to protect them from looting or disturbance. Listing is honorary for private owners; federal undertakings on or near the site go through Section 106 review, and state laws may protect burials and artefacts regardless of listing.
General information, not legal or tax advice. Rules change; confirm with your State Historic Preservation Office or a qualified adviser.
Sources and further reading
- National Park Service, National Register of Historic Places database (snapshot May 2026), reference 70000500.
- Nomination form (PDF, National Archives) — catalog entry
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.