Koster Site, Archaeological site in Greene County, Illinois, US.
Koster Site is an archaeological site in Greene County, Illinois, that contains multiple layered sediment deposits. These layers document thousands of years of environmental change and human settlement along the banks of the Illinois River.
Archaeological excavations began in the 1970s and uncovered evidence of human habitation spanning more than 10,000 years. The findings show a long sequence of cultural development at this location.
Discovered tools and pottery fragments reveal how early inhabitants of this area lived and worked. These finds provide insight into the craftsmanship and daily practices of prehistoric communities along the river.
The site is registered in the National Register of Historic Places, which ensures its protection and allows visitors to learn about the excavations. Most people explore the location best with some background information to understand the different layers and their significance.
The layers at this location reveal a rare transition from hunter-gatherer societies to settled farming cultures spanning many generations. This shift is visible in the foundations, tools, and food remains preserved in the deposits.
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