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Marshall Site (Chillicothe, Illinois)
The Marshall Site is an archaeological site located in the Marshall State Fish and Wildlife Area near Chillicothe, Marshall County, Illinois. The site consists of a boulder carved with five petroglyphs. The petroglyphs, which archaeologists believe were created by Native Americans between 1673 and 1835 A.D., depict three anthropomorphs, an "L"-shaped figure, and a possible avimorph. The site was added to the National Register of Historic Places on August 25, 2014.〔
==Location==
The petroglyphs are carved on a granite boulder located on a wooded hillside overlooking the eastern bank of the Illinois River. This section of the river lies in the central Illinois River Valley and is administered by the state of Illinois as the Marshall State Fish and Wildlife Area. The valley was formed during the Wisconsin glaciation, which is responsible for the cobbles and boulders left in the area. Compared to the northern Illinois River valley and Southern Illinois, the central Illinois River valley has relatively few large boulders or rock structures; this may explain why the petroglyphs were carved on a smaller boulder. The site was located by three area residents in 2011, who reported their discovery to archaeologists at the Dickson Mounds Museum.
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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