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While most Hopewell complexes were seemingly used for less than two centuries, evidence suggests that the Hopewell Mound Group maintained its significance as a ceremonial center throughout the entire era of the Hopewell Culture in Ohio, approximately 400 years. Extended use of these features indicates that the Hopewell Mound Group was the ceremonial center among all the earthworks in this area. At 111 acres, the main enclosure here is the largest single Hopewell earthen-walled area ever found and contained the largest Hopewell burial mound ever built.