Koster Site, Archaeological site in Greene County, Illinois, US.
The Koster Site holds multiple layers of sediment deposits that document environmental changes and human settlements along the Illinois River banks.
Archaeological excavations at the Koster Site, beginning in the 1970s, uncovered evidence of human habitation dating back to approximately 8300 BCE.
Researchers have discovered tools, pottery fragments, and remnants of early dwellings that demonstrate technological developments of prehistoric North American populations.
The National Register of Historic Places designation ensures protection and preservation of the site while allowing guided educational tours for visitors.
The site contains distinct stratified layers that show the transition from nomadic hunter-gatherer societies to settled agricultural communities.
Location: Greene County
GPS coordinates: 39.20865,-90.54962
Latest update: May 17, 2025 10:37
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