For the more information about the air resources of the National Park Service, please visit http://www.nature.nps.gov/air/.
The northern sphagnum bog within the Colby-Marston Preserve has distinct and well-defined vegetation zones and is highly valued for teaching and research purposes. Located in a deep kettle hole, the sphagnum mat exceeds a depth of 40 feet.
Location: Kennebec County, ME
Year designated: 1973
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