Serpent Mound
Great Serpent Mound
The world's largest serpent-shaped effigy mound, about 400 metres long, coiled along a ridge at the rim of an ancient meteorite impact crater; a mysterious and famous site.
This winding serpent-shaped earthwork is about 411 metres long. Its jaws appear to be swallowing an egg-shaped object, and its head points toward the sunset of the summer solstice. Scholars still debate when it was built, with suggestions including the Adena or Fort Ancient cultures. The plateau it sits on lies right on the edge of an ancient meteorite impact structure.
The park has an observation tower, a small museum and a loop trail. It is about 70 kilometres from Chillicothe. Admission is about USD 8 per vehicle, and museum hours are shorter in winter.
Opening hours
Park approx. 09:00 until sunset; museum seasonal
Nearby sights
- Fort Hill State Memorial
- Seip Earthworks
- Hopewell Mound Group
- Adena Mansion & Gardens
- Downtown Chillicothe
- Hopewell Culture NHP – Mound City Group
- Hopeton Earthworks
- Great Seal State Park