High above the Mississippi, earthen mounds in the shape of birds, bears, and simple cones mark the once-flourishing Woodland Culture of the Upper Mississippi River Valley.
From 500 B.C. to A.D. 1300, Eastern Woodland Indians, who were hunters and gatherers, lived in this area. They collected wild rice, nuts, fruits, berries, and freshwater mussels, and their prey included deer, bear, and bison.
There were so many freshwater mussels that the Mississippi River appeared to be paved with cobblestones.