Michael Ruggeri
flipped into Mike Ruggeri's Ancient Adena, Hopewell, and Fort Ancient Cultures Magazine
Sinnissippi Mounds - Wikipedia

Sinnissippi Mounds - Wikipedia

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The Sinnissippi Mounds are a Havana Hopewell culture burial mound grouping located in the city of Sterling, Illinois, United States. The mounds are a …

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