Established in 1940 by the University of Minnesota, the site was designated a National Natural Landmark by the National Park Service in 1975 and later designated by the National Science Foundation as a Long Term Ecological Research site in 1982.
The site was established in 1940 by the University of Minnesota. The site was designated a National Natural Landmark by the National Park Service in 1975. The site was later designated by the National Science Foundation as a Long Term Ecological Research site in 1982.