any section of barren land where rapid erosion has cut the loose, dry soil or soft rocks into strange shapes, as in various places in the W U.S.
barren plateau in SW South Dakota east of the Black Hills; marked by dramatically eroded hills and containing many fossil deposits
See badlands in American Heritage Dictionary 4
Barren land characterized by roughly eroded ridges, peaks, and mesas.
also Bad Lands
A heavily eroded arid region of southwest South Dakota and northwest Nebraska. The Badlands National Monument in South Dakota was established in 1939 to protect the area's colorful rock formations and prehistoric fossils.