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Located within Indiana Dunes National Lakeshore, Cowles Bog illustrates marsh and bog habitat, as well as transition to swamp. The site includes flora that are locally rare.
Location: Porter County, IN
Year designated: 1965
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