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〕 | visitation_num = 538,394 | visitation_year = 2011 | visitation_ref = | governing_body = National Park Service }} Wind Cave National Park is a United States national park north of the town of Hot Springs in western South Dakota. Established in 1903 by President Theodore Roosevelt, it was the seventh U.S. National Park and the first cave to be designated a national park anywhere in the world. The cave is notable for its displays of the calcite formation known as boxwork. Approximately 95 percent of the world's discovered boxwork formations are found in Wind Cave. Wind Cave is also known for its frostwork. The cave is also considered a three-dimensional ''maze cave'', recognized as the densest (most passage volume per cubic mile) cave system in the world. The cave is currently the sixth-longest in the world with of explored cave passageways, with an average of four new miles of cave being discovered each year. Above ground, the park includes the largest remaining natural mixed-grass prairie in the United States. ==Early knowledge== The Lakota, Cheyenne, and other Native American tribes who traveled through the area were aware of the cave's existence, as were early Euro-American settlers, but there has been no evidence yet discovered that anyone actually entered it.〔http://www.nps.gov/wica/historyculture/early-cave-explorers.htm〕 The Lakota (Sioux), an indigenous people who live in the Black Hills region of South Dakota, spoke of a hole that blew air, a place they consider sacred as the site where they first emerged from the underworld where they had lived before the demiurge creation of the world.〔 The first documented discovery of the cave by White Americans was in 1881, when the brothers Tom and Jesse Bingham heard wind rushing out from a by hole in the ground. According to the story, when Tom looked into the hole, the "wind" (exiting cave air) blew his hat off of his head.〔Wind Cave brochure, National Park Service, GPO, WDC〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Wind Cave National Park」の詳細全文を読む スポンサード リンク
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