Turkey River Mounds State Preserve, Protected archaeological site in Millville Township, United States
Turkey River Mounds State Preserve is an archaeological site holding thirty-eight mounds situated on a narrow ridge where two rivers meet. The roughly 62-acre area contains various mound types, with some conical structures measuring up to 100 feet across and others extending over 175 feet in length.
The mounds were built between 500 BCE and 900 CE by early inhabitants of the region. Scholars first documented the site in 1885 and conducted major research investigations during the 1930s.
The mounds display varied shapes, from cone-like structures to extended lines and a panther-shaped effigy form. These different designs reflect the various purposes that builders held for these sacred sites.
The site is located about 4.5 miles southeast of Guttenberg and can be reached via Estes Point Road, where parking is available. Visitors will find informational signs on-site that help explain the different structures and their significance.
Among the thirty-eight mounds sits a rare panther-shaped effigy that stands apart from the typical cone-like or linear structures. This type of sculpted mound is uncommon in North America, making this location particularly valuable to archaeologists.
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