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Pennsylvania

Places We Protect

Rolling mountain ridges extend to the horizon blanketed in mist. In the foreground, leaves are just beginning to show fall color. In the background, heavy fog sits in a deep valley.
West Branch Wilderness Mist from the Susquehanna River viewed from a West Branch Wilderness overlook. © The Nature Conservancy/George C. Gress

With your help, The Nature Conservancy protects critical natural lands and life-giving waters in Pennsylvania

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  • Factsheet explaining how to use the PA/DE preserve monitoring app. Instructions are shown in text and graphics. A QR code in the upper right corner allows users to download the app.

    Preserve Monitoring App

    Help monitor our public preserves. Keep us informed of new issues like downed trees across the trails or other maintenance needs.

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Public Preserves

A large boulder dominates the foreground. Other rocks are visible above the surface of the wide river that stretches to a tree covered mountain ridge that fills the horizon.

Places We Protect

Hamer Woodlands at Cove Mountain

Hamer Woodlands at Cove Mountain represents TNC's first preserve in central Pennsylvania along the state’s Kittatinny Ridge.

A gravel path winds through a barrens landscape of scrubby plants. A mountain ridge extends across the horizon. Thick clouds hang heavy over the landscape.

Places We Protect

Eales Preserve

Moosic Mountain features one of the best examples of heath barrens in the northeastern United States.

A large sign reading The Nature Conservancy Hauser Nature Center welcomes visitors to the large, rustic TNC office in the background.

Places We Protect

Long Pond and Hauser

Our Long Pond Preserve harbors species tolerant of cooler temperatures reminiscent of the region’s glacial past.

Rolling mountain ridges extend to the horizon blanketed in mist. In the foreground, leaves are just beginning to show fall color. In the background, heavy fog sits in a deep valley.

Places We Protect

West Branch Forest

The West Branch Forest Preserve offers an unspoiled view of the High Allegheny Plateau for 50 miles.

A wide stream curves through tall marsh grass in a preserve wetland, disappearing into the trees that line the horizon.

Places We Protect

Thomas Darling Preserve

This groundwater-fed glacial wetland has one of the state's largest and healthiest spruce forests.

A bead of rain water hangs on the petal of a blooming pitcher plant. The head of the flower bends down on the thin, round stem.

Places We Protect

Tannersville Bog Preserve

Known locally as "The Cranberry," this geological remnant of a long-ago ice age was one of TNC's first preserves.

A hummingbird hovers in the air next to a plant covered in small purple blossoms.

Places We Protect

Florence Shelly Preserve

A curiosity about science and dedication to conserving nature led to the establishment of this preserve.

Leaves cover a forest floor. Ferns grow at the base of thick tree trunks that rise up out of frame.

Places We Protect

Woodbourne Forest

Ancient hardwoods--white pine, hemlocks, ash, maples, oaks--blanketed the region prior to human settlement.

Close up view of a green fuzzy plant with small spoon shaped leaves that reach out to the sun.

Places We Protect

State Line Barrens

The State Line Serpentine Barrens contains some of the last major remnants of serpentine grassland in eastern North America.

Water flows through a rocky creek bed that stretches into the distance out of sight between tree lined banks.

Places We Protect

Goeringer Preserve

Seasonal vernal pools and a dry oak heath forest warrant a visit to this preserve.

A blue sky and white clouds frame a mountain valley.

Places We Protect

Brush Mountain

We are working across six states to save one of the Earth's healthiest and diverse deciduous temperate broadleaf forests.

A salamander with a long tail and red stripe running down its back sits nestled in a patch of moss.

Places We Protect

Forest Pools Preserve

This preserve provides a snapshot of why wildlife and outdoor enthusiasts seek out South Mountain's natural beauty.

Other Places We Protect

  • A creek winds in a sinuous s-curve through a restoration site. The banks are covered in protective straw.

    Acopian Preserve

    Lancaster County—Closed to the Public. A patchwork of farms, forests and streams provide a combination of natural elements key to one of the state’s most important populations of federally endangered bog turtle. Learn More

  • Two canoes sit on the side of a river bank. A tall, tree-covered ridge rises in the background under a blue sky and white puffy clouds.

    Butternut Island

    Sullivan County, NY—Limited Access. Located in the Upper Delaware River, this uninhabited island boasts a floodplain forest that includes butternut trees, which are threatened by Japanese knotweed. 36 acres.

  • View looking from the interior of a cave out at two people standing at the cave's entrance.

    Hartman's Cave

    Limited Preserve Access—The cave is closed to the public. Hartman's Cave is located within Pennsylvania's Cherry Valley National Wildlife Refuge. Learn More

  • A bald eagle rests on a branch.

    Long Eddy

    Wayne County—Limited Access. Emerging from steep sandstone and shale slopes, Long Eddy’s wet cliffs nourish one of the only known populations of miner’s lettuce in the U.S. 121.6 acres. An additional 566 acres protected with a conservation easement.

  • Lush forest surrounds a wide wetland pond.

    Minsi Lake/Totts Gap

    Northampton Co.—Open to the Public. This collection of forestlands hugging part of the Kittatinny Ridge represents an important wildlife corridor and boasts the largest collections of vernal pools in PA. 2K acres. 150 acres open for public hunting.

  • A salamander with a long tail and red stripe running down its back sits nestled in a patch of moss.

    Mount Bethel Fens

    Northampton County— Closed to the Public. This complex of globally rare calcareous fens—a turn-of-the-century botanical wonder—will disappear if the delicate balance between water and chemical composition is disrupted.

  • A bush boasts pink flowers in bloom.

    Mount Holly Marsh

    Cumberland County—Open to the Public. TNC manages 200 acres of the preserve’s sensitive habitats and rare species in this mini-wilderness that encapsulates the surrounding South Mountain landscape.

  • A small toad sits on a long, thin leaf.

    Mountain Run Ponds

    Franklin & Cumberland Counties. During spring, the base of South Mountain awakes with seasonal vernal ponds that welcome frogs, toads, spring peepers and salamanders that emerge to breed. 10 acres.

  • Two small bats hang from the top of a cave.

    Richard O. Rowlands Preserve at Aitkin Cave

    Union County—Limited Access; cave is closed. Identified as a premier bat hibernacula in Pennsylvania dating back to the 1930s, Aitkin Cave harbors several species of bats and other unique cave-dwelling species. 43 acres. Learn More

  • A black-and-white butterfly rests in the middle of a pile of dry leaves.

    Westfall Ridge Prairie

    Juniata County—Limited Access. This limestone ridge is home to a globally rare rocky glade prairie community that once supported grazing animal herds, including bison. 32.25 acres. An additional 116 acres are protected under conservation easement.

Partnership in Action

Explore some of the places TNC has had a hand in protecting.

  • Water pools in a wide marshy area. Green plants and tall trees line the background and horizon.

    Bristol Marsh Preserve

    Open to the Public. TNC works with the Heritage Conservancy to protect rare plants native to the Delaware River; tidal marshes thrive here. Learn More

  • A wide stream flows between snow-covered banks. A fallen log rests at an angle with one end in the water.

    Cherry Valley National Wildlife Refuge

    Monroe and Northampton Counties—Open to the Public. A large part of TNC's work has focused on successfully establishing a national wildlife refuge with a consortium of local organizations and landowners. 20,000+ acres. Learn More

  • A person stands on a rock outcropping looking out at a valley landscape. Their view is obscured by a thick stand of trees.

    Kittatinny Ridge

    TNC is part of the Kittatinny Ridge Land Protection Partnership, a coalition of six local and regional land trusts working to protect 100,000 acres along the ridge by 2050. Learn More