Kincaid Mounds11 MX2 11; 11 PO2 10 - Credit: Wikimedia Commons
The Kincaid Mounds Historic Site (11MX2-11; 11PO2-10) , is a Mississippian culture archaeological site located at the southern tip of present-day U.S. state of Illinois, along the Ohio River. Kincaid Mounds has been notable for both its significant role in native North American prehistory and for the central role the site has played in the development of modern archaeological techniques. The site had at least 11 substructure platform mounds (it ranks fifth among known sites of this period for the number of such structures), and 8 other monuments. Read more on Wikipedia
Source: en.wikipedia.org