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Bear Butte is a geological butte feature located near Sturgis, South Dakota, United States, that was established as a State Park in 1961. An important landmark and religious site for the Plains Indians tribes long before Europeans reached South Dakota, Bear Butte is called ''Mathó Pahá'',〔''Elementary Bilingual Dictionary'' (1976) University of Colorado〕 or Bear Mountain, by the Lakota, or Sioux. To the Cheyenne, it is known as ''Noahȧ-vose'' ("giving hill") or ''Náhkȯhe-vose'' ("bear hill"),〔''English-Cheyenne Student Dictionary'' (1976) Northern Cheyenne Bilingual Education Program〕 and is the place where Ma'heo'o (God) imparted to Sweet Medicine, a Cheyenne prophet, the knowledge from which the Cheyenne derive their religious, political, social, and economic customs. The mountain is sacred to many indigenous peoples, who make pilgrimages to leave prayer cloths and tobacco bundles tied to the branches of the trees along the mountain’s flanks. Other offerings are often left at the top of the mountain. The site is associated with various religious ceremonies throughout the year. The mountain is a place of prayer, meditation, and peace. The park includes a campsite south of South Dakota Highway 34 where horseback riding, fishing, and boating are permitted. On the summit side of Highway 34, a moderately sized herd of buffalo roams the base of the mountain. An education center and a summit trail are available. Official park policy advises visitors to Bear Butte to respect worshipers and to leave religious offerings undisturbed. Park fees are waived for those undertaking religious activities. In 2007, Gov. Mike Rounds of South Dakota announced a proposal to use state, federal and private money to buy a perpetual easement in order to prevent commercial and residential development of some land on the western side of Bear Butte. This would cost more than $1 million, but would prevent development of nuisance businesses (such as potentially lucrative biker bars) on ranch land near the mountain on the northern edge of the Black Hills.〔(Associated Press article ), 12/17/07. (URL dead as of April 25, 2008)〕 ==Geological history== Bear Butte is not strictly a ''butte'' (created primarily by erosion of sedimentary strata), but a ''laccolith'': an intrusive body of igneous rock, uplifting the earlier sedimentary layers, which have since largely eroded away. This is the result of the forcible entry (or intrusion) of magma into cooler crustal rock in the Black Hills area during the Eocene Epoch. In this, Bear Butte shares a similar geological history with other formations in the region, including the Black Hills, Devils Tower, the Missouri Buttes, and some parts of the Rocky Mountains. It is possible that when the intrusion was emplaced, some magma may have breached the surface, forming a volcano; however, it would have eroded away long ago. The peak rises above the surrounding plain and is above sea level. 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「Bear Butte」の詳細全文を読む スポンサード リンク
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