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The National Park Service has acquired 5,555 acres of former ranchland to expand Wind Cave National Park in South Dakota.
Interior Secretary Ken Salazar says the land includes a thousand-year-old buffalo jump and an historic homestead. Buffalo jumps are cliffs or steep banks that American Indians used to kill bison by driving them over the edge.
Congress in 2005 approved expanding the park, and this year approved money to do it. The Conservation Fund acquired the property at auction from a private family and has transferred it to the Park Service. A public dedication is planned October 15.
Wind Cave National Park is home to one of the world's longest and most complex caves. Its 30,000 surface acres of prairie and pine forest provide habitat for wildlife.