There are 13 National Natural Landmark sites located within the state of Tennessee. Natural features represented include one of the longest caves in the country, the largest known underground lake in the country, and one of the best remaining examples of a cedar glade community. All 13 sites received NNL designation in a nine-year perioid from 1966 to 1974. Sites range in size from 9 acres to over 1,100 acres and are owned by a variety of landowners including U.S. Fish and Wildlife Service, U.S. Air Force, Tennessee Department of Environment and Conservation and private individuals.
Below is a map of sites in Tennessee.
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.