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Skyline Caverns is a series of geologic caves and a tourist attraction located in Front Royal, Virginia.〔http://www.dmme.virginia.gov/DMR3/dmrpdfs/CAVES.pdf〕 The caverns were discovered by Walter S. Amos, a retired geologist and mineralogist from Winchester, Virginia, on December 17, 1937. Skyline Caverns is open year-round, offering guided tours through the caverns. In addition to the cavern tours, attractions include a miniature train ride and mirror maze.〔http://skylinecaverns.com/train.html〕〔http://skylinecaverns.com/maze.html〕 ==History== Amos was contracted by several private and government agencies to search for caves and caverns to open in conjunction with Skyline Drive. During his search, he came across a sinkhole that was located approximately where the parking lot is currently situated. Normally, sinkholes are created by the collapsing of a cavern roof, which takes the ground above with it. When he saw there was no water in the sinkhole, which meant there had to be a drain nearby, he believed he had discovered a cavern. Knowing this, Amos began to search the edges for some opening to the possible cave system below. He found this opening on the lip of the sinkhole by noticing a small colony of camel crickets (which only live in damp, dark areas by nature) under a small ledge. Upon digging out the first "room" of the caverns, he came into a large system of connected rooms, most of which were navigable and cleared from all obstructions. 90% of the caverns were naturally accessible and other than the entrance area, only 10% needed to be dug out. The use of scientific analysis makes the discovery of Skyline Caverns extremely unique.〔http://skylinecaverns.com/history.html〕 However, the cavern floor was lined with approximately 14 inches of mud and clay, which had to be cleared before the caverns could be opened to the public on April 13, 1939. The caverns are estimated to be approximately 50 to 60 million years old.〔http://skylinecaverns.com/history.html〕 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「Skyline Caverns」の詳細全文を読む スポンサード リンク
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