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The Leffingwell Camp Site, on Flaxman Island, west of Barter Island on the Arctic Coast of Alaska, was used by polar explorer and geologist Ernest de Koven Leffingwell on his pioneering Anglo-American Polar Expedition of 1906–1908, which aimed to explore the Beaufort Sea. The expedition's ship, the ''Duchess of Bedford'', was allowed to become locked in ice which eventually destroyed it.〔 The camp site was chosen before the ship was locked in ice, and was not merely the nearest landfall. The site was used by Leffingwell over several years, beyond the end of that expedition. Leffingwell created the first accurate map of a section of Alaskan coastline. He was the first to scientifically describe permafrost and to pose theories about permafrost which have largely proven true. He accurately identified the oil potential of the area, including assessing that it was not, in his day, technologically or economically feasible to develop it.〔 Following the destruction of the ''Duchess of Bedford'', Leffingwell "returned to civilization in the fall of 1908, as the guest of Capt. George B. Leavitt."〔(The Canning River Region, Northern Alaska, Ernest K. Leffingwell, Professional Paper, United States Geological Survey, Government Printing Office, Washington, D.C., 1919 )〕 Leffingwell subsequently named Narwhal Island for the name of Capt. Leavitt's vessel, the steam New Bedford, Massachusetts-based whaler ''Narwhal'', and bestowed the name of the Maine-born Captain,〔Whaling captain and arctic explorer George B. Leavitt was the son of George W. Leavitt and his wife Helen E. (Greene) Leavitt, and was born in Portland, Maine.()〕 who married an Inuit woman and settled at Barrow, on Leavitt Island off the Alaska North Slope.〔(Narwhal Island, cLocations )〕 The historic integrity of the camp was diminished in the 1930s when some structure was removed by a salvager. The camp was declared a National Historic Landmark in 1978.〔〔 and 〕 ==See also== *List of National Historic Landmarks in Alaska *National Register of Historic Places listings in North Slope Borough, Alaska 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「Leffingwell Camp Site」の詳細全文を読む スポンサード リンク
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