The mound of Nanih Waiya is about tall, wide, and long. Evidence suggests it was originally a larger platform mound, which has eroded into the present shape. At one time, it was bounded on three sides by a circular earthwork enclosure about ten feet tall, which encompassed one square mile. In 2006, the Mississippi Legislature's State Bill 2803 officially returned control of the site to the Luke Family, and T. W. Luke deeded it to the State on the condition that it be maintained as a park.