Spruce Hill Earthworks

Black and white map of Spruce Hill in 1846
A drawing of Spruce Hill Earthworks taken from Ancient Monuments of the Mississippi Valley, c.1846.  Click this image for a larger version of the original Squier and Davis plate.

Squier & Davis

Prehistoric History

Spruce Hill is a small sliver of Ohio's geologic library, rich with a beautiful biodiversity, and laden with evidence of the prehistoric Hopewell culture. Even the trail that leads up to the storied plateau area contains geologic "windows" that allow us to see back in time. The sediment-washed trail has countless exposed layers of shale which date to almost 400 million years ago. Rippled sandstone, which dots the trail, is direct evidence that the area was once under the cover of a sprawling ancient sea. The lush woodland hillsides nurture rare and exotic flora and lively fauna of all shapes and sizes.

Mystery and Awe

Built primarily of stone, a low perimeter walls encloses the 140-acre plateau of the mesa-like ridge top. At intervals along the walls is evidence of mysterious burning that produced heat higher than an open fire can generate. Spruce Hill proper is a prominent feature in the Paint Creek Valley, once affording grand vistas of the surrounding floodplain below that included the geometric ceremonial complexes of nearby Baum Earthworks and Seip Earthworks.

Present and Future

If you would like to read the 1998 Spruce Hill Summary Report that explored the feasibility of adding the site to the park, please Contact Us and we would be happy to send you a copy of the report.

Spruce Hill Earthworks is owned by the Arc of Appalachia Preserve System. Please contact the Arc of Appalachia Preserve System to request additional information about or for access to the site.

A colorful field of spring flowers in full bloom
A sea of Goldenrod covers the plateau of Spruce Hill Earthworks in the spring.

NPS Photo / Tom Engberg

A rocky trail surrounded by trees
Exposed shale on the right side of the trail leading up to the plateau of Spruce Hill Earthworks.

NPS Photo / Tom Engberg

Last updated: September 10, 2021

Park footer

Contact Info

Mailing Address:

16062 State Route 104
Chillicothe , OH 45601


740 774-1125

Contact Us

Stay Connected