This large earthwork complex contains a low embankment forming a small circle and an irregular circle and a square, all connected and enclosing about 121 acres. Within the enclosure are a large elliptical mound, three smaller conjoined mounds, several small mounds, and several structure outlines found through excavations. It is estimated that the large mound was originally 240 feet long, 160 feet wide, and 30 feet high.

A reconstructed mound and a portion of the reconstructed wall are visible, and a portion of the original wall is visible near Dill Road. Parking is only accessible at the front of the site. No restroom facilities are at this site, but there is a covered picnic shelter. Informative signs are placed throughout the earthwork. The site is open daylight hours.

Earthen mounds and embankments forming huge geometric enclosures grace the landscape of the Ohio River Valley. These monumental structures were built by Native American hands almost 2,000 years ago. Hopewellian people gathered at these earthworks for feasts, funerals, and rites of passage. Come learn about these sacred spaces and reflect upon the lives of these American Indians.

Visible remnants of Hopewell culture are concentrated in the Scioto River valley near the present-day city of Chillicothe, Ohio. The most striking Hopewell sites contain earthworks in the form of circles, squares, and other geometric shapes. Many of these sites were built to a monumental scale, with earthen walls up to 12 feet high outlining geometric figures more than 1,000 feet across. Conical and loaf-shaped earthen mounds up to 30 feet high are often found in association with the geometric earthworks. Hopewell Culture National Historical Park preserves six earthwork complexes: High Bank Works, Hopeton Earthworks, Hopewell Mound Group, Mound City Group, Seip Earthworks and Spruce Hill Earthworks.

Restrooms at Mound City Visitor Center.