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Pennsylvania National Natural Landmarks

Cook Forest State Park - 7/1/2007
Once called the "Black Forest", the park is a heavily wooded area with some of America's finest virgin white pine and hemlock timber stands

Ferncliff Wildflower and Wildlife (Drumore) - 10/22/2023
An excellent example of a mixed mesophytic forest that occupies the valleys and ravines of the oak-chestnut forest region

McConnells Mill State Park - 7/1/2007
Features a deep scenic gorge with the restored watermill and a covered bridge at the bottom

Nottingham Park Serpentine Barrens (Nottingham) - 10/22/2023
One of the largest outcrops of serpentine in the eastern U.S., which creates a savanna-like habitat with a number of unusual flora

Susquehanna Water Gaps (Marysville) - 10/22/2023
The Susquehanna River cuts through five mountain ridges to form the gaps between Liverpool and Harrisburg