The builders of the effigy mounds are usually referred to as the Mound Builders.

The Winnebago suggest that effigy mounds were used as places of refuge, not of burial.

Other evidence suggests that effigy mounds were used for all manner of rites and ceremonies, from birth ceremonies to funeral rites and everything in between.

The nature center offers specific courses designed to teach individuals about the history of the effigy mounds.

The site is notable for remains of a fortified Native American effigy mound settlement.

Twenty nine effigy mounds are located just south of the village site, although these pre-date the artifacts by several centuries.

Away from the lake one can find restored prairie and savanna, effigy mounds, hiking trails and ski trails.

These are known as effigy mounds.

There are several native American effigy mounds in the upper campground portion of the park.

Dozens of 1200 year old effigy mounds were built by the Mound Builders in the surrounding low ridges.