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Allerton Natural Area
Allerton Natural Area provides an example of the rapidly disappearing Illinois stream valley ecosystem. The site contains relatively undisturbed examples of bottomland and upland forests.
Location: Piatt County, IL
Year designated: 1970
Please remember, National Natural Landmarks (NNLs) are not national parks. NNL status does not indicate public ownership, and many sites are not open for visitation.
Last Updated: June 28, 2012