With an abundance of sand dunes it's easy to make your own style of fun. ATVs, dune buggies, 4-wheel drives, and roll cage-protected vehicles will encounter rolling dunes, bowls, and flat areas that appeal to sand dune dragsters who feel the need for speed. The 1,300-acre park is the state's largest sand dune park, and one of the largest in the Midwest. Permits required for unregistered vehicles. Admission charge.