Interior is the oldest Badlands town, dating back to the 1880s. Originally, Interior was located along the Big White River.  When the railroad came,  it moved one mile north. The town is just outside the south gate of Badlands National Park. Public lands near Interior hold South Dakota’s premier agate beds for rock hunters.

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Of interest near Interior are Badlands National Park, Badlands Loop Scenic Byway, Buffalo Gap National Grasslands, Pine Ridge Indian Reservation, High Plains Big Game Hunting, Lakota Heritage.