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123 WAVES OF GRASS
Harding County, South Dakota. Rolling hills and flowing prairie grass create a sea of green in Harding County, South Dakota. This broad expanse of prairie is part of Custer National Forest and National Grasslands, the most ecologically diverse forest in the Northern Region. The lands of Custer National Forest and National Grasslands, which lie within 20 counties of Montana, North Dakota and South Dakota, contain 1,278,279 acres, and include three National Grasslands.