Mound City Group

Mound City, a group of 23 earthen mounds constructed by the people of the Hopewell Culture, an ancient tribe of Native Americans(200 BC to AD 500). The group is located on US-104, approximately 4 miles north of the city of Chillicothe, Ohio. The US Park Service administers the site.
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Visible remnants of Hopewell culture are concentrated in the Scioto River valley (near present-day Chillicothe). The most striking Hopewell sites contain earthworks in the form of squares, circles, and other geometric shapes. The Mound city group was constructed on a monumental scale with earthen walls up to 12 feet high outlining geometric figures more than 1000 feet across.

Conical and loaf-shaped earthen mounds up to 30 feet high are often found in association with these geometric earthworks.

Each mound within the Mound City Group covered the remains of a charnel house. After the Hopewell people cremated the dead, as they burned the charnel house their practice was too construct a mound over the remains. They also placed artifacts, such as copper figures, mica, arrowheads, shells, and pipes in the mounds. The site contains a collection of the relics excavated from the site