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Located within Indiana Dunes National Lakeshore, Pinhook Bog is a living demonstration of the textbook description of ecological succession from pond to woodland. The site lies within a bowl-shaped depression likely to be a glacial kettle, and is surrounded by wooded hills.
Location: La Porte 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