Fort Thompson Mounds - Credit: Wikimedia Commons
Fort Thompson Mounds - Credit: Wikimedia Commons
The Fort Thompson Mounds are a complex of ancient archaeological sites in Buffalo County, South Dakota, near Fort Thompson and within the Crow Creek Reservation. Declared a National Historic Landmark in 1964 by the US Department of Interior, the mound complex extends for a distance of about along the east bank of the Missouri River. It is one of the largest known complex of burial mounds in the Plains region north of Kansas. Read more on Wikipedia
Source: en.wikipedia.org