Pennsylvania

There are 27 sites designated as National Natural Landmarks within the Commonwealth of Pennsylvania. Natural features represented include one of the finest examples in the Eastern U.S. of a deep gorge, the largest �flying spit� in the Great Lakes region, one of the largest populations of serpentine aster, and one of the oldest organisms in the world. The first site in Pennsylvania to be designated a NNL was Wissahickon Valley in 1964, and the most recent designation was of Nottingham Park Serpentine Barrens in 2009. The 27 sites range in size from less than an acre to nearly 30,000 acres and are owned by a variety of landowners including Pennsylvania Department of Conservation and Natural Resources, U.S. Fish and Wildlife Service, U.S. Forest Service, county and municipal agencies, and private conservation organizations.

Below is a map of sites in Pennsylvania.

National Natural Landmark sites are located in the following counties: Berks, Bucks, Carbon, Centre, Chester, Clarion, Cumberland, Erie, Fayette, Forest, Lackawanna, Lancaster, Lawrence, Luzerne, Lycoming, McKean, Monroe, Perry, Philadelphia, Snyder, Sullivan, Tioga, Warren, and Wayne.

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To learn more about National Natural Landmarks in Pennsylvania, select a site from the list or the map below:

Bear Meadows Natural Area Box Huckleberry Site Cook Forest Ferncliff Peninsula Natural Area Ferncliff Wildflower and Wildlife Preserve Florence Jones Reineman Wildlife Sanctuary Hawk Mountain Sanctuary Hearts Content Scenic Area Hemlocks Natural Area Hickory Run Boulder Field John Heinz National Wildlife Refuge at Tinicum Lake Lacawac McConnell's Mill State Park Monroe Border Fault Nay Aug Park Gorge and Waterfall Nottingham Park Serpentine Barrens Pine Creek Gorge Presque Isle Reynolds Spring and Algerine Swamp Bogs Snyder-Middleswarth Natural Area Susquehanna Water Gaps Tamarack Swamp Tannersville Cranberry Bog The Glens Natural Area Tionesta Scenic and Research Natural Areas Titus and Wattsburg Bogs Wissahickon Valley

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.

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