Effigy Mounds National Monument in Iowa near the Mississippi River preserves more than 200 prehistoric American Indian ceremonial mounds, including many in animal shapes such as a bear or bird. The park was established in 1949.
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Effigy Mounds National Monument in Iowa near the Mississippi River preserves more than 200 prehistoric American Indian ceremonial mounds, including many in animal shapes such as a bear or bird. The park was established in 1949.