Bad lands : Barren regions, especially in the western United States, where horizontal strata (Tertiary deposits) have been often eroded into fantastic forms, and much intersected by ca–ons, and where lack of wood, water, and forage increases the difficulty of traversing the country, whence the name, first given by the Canadian French, Mauvaises Terres (bad lands).

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Taxonomy
Badlands National Park, National Park Service, South Unit, the Badlands, GMP, bison, bighorn sheep, black-footed ferrets, swift fox, public comments, climate, Teachers, General Management Plan, map, text size, printer, QUICKLINKS, world's richest.

Defination from the web:
Headquartered in Interior, South Dakota.