S: (n) Rapid City (a town in southwestern South Dakota in the eastern part of the Black Hills)
S: (n) Sioux Falls (largest city in South Dakota; located in southeastern South Dakota)
S: (n) Black Hills (mountains in western South Dakota and northeastern Wyoming)
S: (n) Big Sioux River (a river that rises in northeastern South Dakota and flows southward to join the Missouri River at Sioux City, Iowa)
S: (n) Black Hills (mountains in southwestern South Dakota and northeastern Wyoming; sacred to the Sioux (whites settling in the Black Hills led to the Battle of Little Bighorn); site of Mount Rushmore)
S: (n) James, James River (a river that rises in North Dakota and flows southward across South Dakota to the Missouri)
S: (n) Little Missouri, Little Missouri River (a river that rises in northeastern Wyoming and flows through Montana and South Dakota to join the Missouri River in North Dakota)
S: (n) Moreau River (a river that rises in western South Dakota and flows eastward to the Missouri River)
S: (n) Rushmore, Mount Rushmore, Mt. Rushmore (a mountain in the Black Hills of South Dakota; the likenesses of Washington and Jefferson and Lincoln and Roosevelt are carved on it)