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Devils Hole is a geologic formation located within the Ash Meadows National Wildlife Refuge, in Nye County, Nevada Southwestern United States. Devils Hole—a detached unit of Death Valley National Park—is habitat for the only naturally occurring population of the endangered Devils Hole pupfish (Cyprinodon diabolis). The 40 acre (16 ha) unit is a part of the Ash Meadows complex, an area of desert uplands and spring-fed oasis designated a national wildlife refuge in 1984. ==Description== ''Devils Hole'' is a geothermal pool within a limestone cavern in the Amargosa Desert in the Amargosa Valley of Nevada, east over the Amargosa Range and Funeral Mountains from Death Valley. Its waters are a near constant salinity and temperature ().〔 Devils Hole branches into deep caverns at least deep from an opening at the surface that is approximately . According to geologists, the caves were formed over 500,000 years ago. The pool has frequently experienced activity due to far away earthquakes,〔(【引用サイトリンク】work=Devils Hole )〕 which have been likened to extremely small scale tsunamis. Devils Hole is the only natural habitat of the Devils Hole pupfish, which thrives despite the hot, oxygen-poor water. It is an IUCN Red List endangered species. The enclosing cave is occasionally used as a roost for barn owls, which tend to increase diatom growth via guano. 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「Devils Hole」の詳細全文を読む スポンサード リンク
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