There are 27 National Natural Landmarks in Pennsylvania.

Name Image Date Location County Ownership Description Bear Meadows Natural Area 1965 Centre public/stateRothrock State Forest Box Huckleberry Site Perry public/state Tuscarora State Forest A natural area which preserves a rare colony of box huckleberry over 1,000 years old. Cook Forest State Park Clarion Forest Jefferson public/state A state park notable for its spectacular stands of old-growth Eastern White Pine and Eastern Hemlock, many from around 1644. Ferncliff Peninsula Natural Area 1973 Fayette public/state Ohiopyle State Park This peninsula is formed by a meander in the Youghiogheny River. It is a good example of a late successional forests in the Allegheny Mountains Ferncliff Wildflower and Wildlife Preserve 1972 Lancaster private/nonprofit The vegetation within the Ferncliff Wildflower and Wildlife Preserve is an excellent example of a mixed mesophytic forest that occupies the valleys and ravines of the oak-chestnut forest region. Florence Jones Reineman Wildlife Sanctuary 1973 Cumberland Perry private/family trust Contains a diverse ecological community. Pine Creek Gorge 1968 Tioga Lycoming public/state Tioga State Forest Known as the "Grand Canyon of Pennsylvania", a deep gorge carved by glacial meltwater. The maximum depth of the canyon is 1,450 feet (442 m) at Waterville, near the southern end. At Leonard Harrison and Colton Point State Parks, the depth is more than 800 feet and from rim to rim is approximately 4,000 feet (1200 m). Protects . Hawk Mountain Sanctuary 1965 Berks Schuylkill private/nonprofit A sanctuary on a Blue Mountain ridge, known as an excellent vantage point for hawk migrations. Hearts Content Scenic Area 1973 or 1977 Warren public/federal Allegheny National Forest An old-growth white pine forest of . Hemlocks Natural Area 1972 Perry public/state Tuscarora State Forest Features numerous old growth hemlock trees. Hickory Run Boulder Field 1967 Carbon public/state Hickory Run State Park A landscape of sandstone boulders, which were formed approximately 20,000 years ago. Lake Lacawac 1968 Wayne private/nonprofit A glacial lake surrounded by a hardwood conifer forest. McConnells Mill State Park 1972 Lawrence public/state Protects of the Slippery Rock Creek gorge, including several waterfalls. Monroe Border Fault 1980 Bucks public/state Nockamixon State Park An upland along the Delaware River, the area features a variety of exposed rocks from different geological ages. Nay Aug Park Gorge and Waterfall 1989 Lackawanna public/municipal Located in an urban park, it features a rock-strewn, heavily wooded gorge. Nottingham Park Serpentine Barrens 2009 Chester private/nonprofit A county park on one of the largest outcrops of serpentine in the eastern US, which creates a savanna-like habitat with a number of unusual flora. Presque Isle State Park 1967 Erie public/state A sandy peninsula stretching into Lake Erie. Reynolds Spring and Algerine Swamp Bogs 1974 Tioga Lycoming public/state Tioga State Forest Contains two bogs of and , which are surrounded by thick oak and pine groves. The Glens Natural Area 1968 Columbia Sullivan Luzerne public/state Ricketts Glen State Park of old growth forest, with many trees exceed in height. Twenty two separate named waterfalls are located in the area. Snyder Middleswarth Natural Area 1967 Snyder public/state Bald Eagle State Forest A hemlock, pine, and oak forest located on . Susquehanna Water Gaps 1968 Cumberland, Dauphin, Perry public/state Millions of years of erosive rock create impressive landforms of unique geologic heritage and outstanding natural beauty, as the Susquehanna River cuts through five ridges of the Appalachian Mountains north of Harrisburg. Tamarack Swamp 1977 Warren public/state An acidic kettle pond bog. Tannersville Cranberry Bog 1974 Monroe private/nonprofit A kettle lake fen. John Heinz National Wildlife Refuge at Tinicum 1965 Philadelphia Delaware public/federal Protects a tidal marsh of located in an urban environment. Tionesta Scenic and Research Natural Areas 1973 Warren McKean public/federal Allegheny National Forest of old growth forest on the Allegheny Plateau. Titus and Wattsburg Bogs 1977 Erie private/nonprofit A peatland of located near the shore of Lake Erie. Wissahickon Valley 1964 Montgomery, Philadelphia public/state Fort Washington State Park Protects an urbanized tributary of the Schuylkill River, which features a gorge and thick woodlands.

See also

List of National Historic Landmarks in Pennsylvania

References