There are eight sites designated as National Natural Landmarks located entirely or partially within the state of Connecticut. Natural features represented include a fossilized dinosaur trackway, the most southerly boreal bog, and diverse exhibits of flora, including old growth white pine-hemlock forest and Atlantic white cedar swamp. The first site in Connecticut to be designated a NNL was Dinosaur Trackway in 1968 and the most recent was Cathedral Pines in 1982. The eight sites range in size from just over 10 acres to over 1,500 acres and are owned by a variety of landowners including Connecticut Department of Environmental Protection, The Nature Conservancy, municipalities, and other private conservation organizations and individuals.
Below is a map of sites in Connecticut.
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.