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Thetis Mound : ウィキペディア英語版 | Thetis Mound
Thetis Mound is a hill in the North Slope Borough, of Alaska, United States. It is southeast of Oliktok Point and west of Beechey Point. The name was published by the United States Geological Survey in 1911 and the hill was used as a triangulation station by Ernest de Koven Leffingwell; it was entered into the Geographic Names Information System on March 31, 1981.〔(USGS GNIS Feature Detail Report: Thetis Mound )〕 Thetis Mound is a type of hill known as a pingo.〔U.S. Coast and Geodetic Survey. ''Journal, Volumes 1-7''. 1948.〕 ==References==
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