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Folkert Mound Group
(詳細はHardin County, Iowa is a collection of 27 prehistoric mounds on the bluffs above the Iowa River, in a variety of shapes, including linear, compound, conical, and an enigmatic cruciform mound. The earliest map of the mounds was made by John Hotopp in 1974,〔Hotopp map of 13HA30, 1974, on file, Office of the State Archaeologist, Iowa City.〕 and the mound group was mapped in detail in 2006.〔Collins and Whittaker (2007) ''Digital Mapping and Ground-Penetrating Radar Survey of the Folkert Mound Group (13HA30), Hardin County, Iowa.'' Contract Completion Report 1395. Office of the State Archaeologist, University of Iowa, Iowa City.〕
The alignment of the cruciform mound is especially interesting to researchers.〔Collins and Whittaker (2007) Folkert Mound Group Revealed: Restoration and Non-Destructive Mapping of Hardin County Mounds. ''Newsletter of the Iowa Archaeological Society'' 57(1):10, http://www.uiowa.edu/~osa/IAS/central/Spring2007.pdf〕 Horton〔Horton (2007) A Star Explodes! A.D. 1054: Did Prehistoric Native Iowans Witness and Record this Titanic Stellar Event? ''Newsletter of the Iowa Archaeological Society'' 57(3):1-2.〕 felt the cruciform mound aligned with the 11th century Crab Nebula supernova. However Lensink〔Lensink (2007) ''Newsletter of the Iowa Archaeological Society'' 57(3):2.〕 felt there was little evidence of this possible alignment. An apparent alignment of the largest conical mound, A, in the south with the end peaks of the cruciform mound, X, and an alignment between Mound X and the end of longest mound, T, has been postulated, but the meaning of these alignments is unknown.〔Collins and Whittaker (2009) Alignments at the Folkert Mound Group. ''Newsletter of the Iowa Archaeological Society'' 59(1):1-2〕
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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