Midewin National Tallgrass Prairie
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The Midewin National Tallgrass Prairie is a prairie reserve operated by the United States Forest Service. It is located on the site of the former Joliet Army Ammunition Plant near Elwood, Illinois, and was established by federal law in 1996. After a period of ecological restoration, part of the prairie opened to visitors in 2004. Another section remains closed to visitors because of toxic waste contamination.
MNTP is the only federally managed tallgrass prairie, and one of the few remaining areas of tallgrass prairie located east of the Mississippi River.