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Custer National Forest

Custer National Forest is located primarily in the southern part of the U.S. state of Montana but also has separate sections in rthwestern South Dakota. With a total area of 1,278,279 acres (5,173.03 km sq), the forest comprises over 10 separate sections. While in the westernmost sections, Custer National Forest is a part of the Greater Yellowstone Ecosystem, the easternmost sections are a combination of forest "islands" and grasslands.