The U.S. state of South Dakota operates 13 state parks, 43 recreation areas, 6 nature areas, and 1 trail, totaling approximately 96,000 acres. These sites are administered by the South Dakota Department of Game, Fish, and Parks. These areas preserve natural geologic features, historic and sacred Plains Indian sites, and historic pioneer settlements and forts. They also provide recreational facilities and access to waterbodies, including the Missouri River, on which there are 25 recreation areas.