Little Sahara State Park has over 1,600 acres of sand dunes ranging from 25 to 75 feet high. The dunes formed from terrace deposits left when the Cimarron River flowed across the area in prehistoric times. The park is south of Waynoka in northwest Oklahoma and has RV sites with water, electric and sewer hookups, tent sites, picnic areas and comfort stations. All campsites must be reserved online. The main attraction is dune buggy and ATV riding across the dunes, with visitors bringing their own ATV or renting one.