List of National Natural Landmarks in Pennsylvania


From List of National Natural Landmarks, these are the National Natural Landmarks in Pennsylvania. There are 27 in total.
NameImageDateLocationCountyOwnershipDescription
1Bear Meadows Natural Area1965Centrepublic/state
Rothrock State Forest
2Box Huckleberry SitePerrypublic/state
Tuscarora State Forest		A natural area which preserves a rare colony of box huckleberry over 1,000 years old.
3Cook Forest State ParkClarion
Forest
Jefferson		public/stateA state park notable for its spectacular stands of old-growth Eastern White Pine and Eastern Hemlock, many from around 1644.
4Ferncliff Peninsula Natural Area1973Fayettepublic/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
6Florence Jones Reineman Wildlife Sanctuary1973Cumberland
Perry		private/family trustContains a diverse ecological community.
7Pine Creek Gorge1968Tioga
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 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. Protects.
8Hawk Mountain Sanctuary1965Berks
Schuylkill		private/nonprofitA sanctuary on a Blue Mountain ridge, known as an excellent vantage point for hawk migrations.
9Hearts Content Scenic Area1973 or 1977Warrenpublic/federal
Allegheny National Forest		An old-growth white pine forest of.
10Hemlocks Natural Area1972Perrypublic/state
Tuscarora State Forest		Features numerous old growth hemlock trees.
11Hickory Run Boulder Field1967Carbonpublic/state
Hickory Run State Park		A landscape of sandstone boulders, which were formed approximately 20,000 years ago.
12Lake Lacawac1968Wayneprivate/nonprofitA glacial lake surrounded by a hardwood conifer forest.
13McConnells Mill State Park1972Lawrencepublic/stateProtects of the Slippery Rock Creek gorge, including several waterfalls.
14Monroe Border Fault1980Buckspublic/state
Nockamixon State Park		An upland along the Delaware River, the area features a variety of exposed rocks from different geological ages.
15Nay Aug Park Gorge and Waterfall1989Lackawannapublic/municipalLocated in an urban park, it features a rock-strewn, heavily wooded gorge.
16Nottingham Park Serpentine Barrens2009Chesterprivate/nonprofitA 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.
17Presque Isle State Park1967Eriepublic/stateA sandy peninsula stretching into Lake Erie.
18Reynolds Spring and Algerine Swamp Bogs1974Tioga
Lycoming		public/state
Tioga State Forest		Contains two bogs of and, which are surrounded by thick oak and pine groves.
19The Glens Natural Area1968Columbia
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.
20Snyder Middleswarth Natural Area1967Snyderpublic/state
Bald Eagle State Forest		A hemlock, pine, and oak forest located on.
21Susquehanna Water Gaps1968Cumberland, Dauphin, Perrypublic/stateMillions 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.
22Tamarack Swamp1977Warrenpublic/stateAn acidic kettle pond bog.
23Tannersville Cranberry Bog1974Monroeprivate/nonprofitA kettle lake fen.
24John Heinz National Wildlife Refuge at Tinicum1965Philadelphia
Delaware		public/federalProtects a tidal marsh of located in an urban environment.
25Tionesta Scenic and Research Natural Areas1973Warren
McKean		public/federal
Allegheny National Forest		 of old growth forest on the Allegheny Plateau.
26Titus and Wattsburg Bogs1977Erieprivate/nonprofitA peatland of located near the shore of Lake Erie.
27Wissahickon Valley1964Montgomery, Philadelphiapublic/state
Fort Washington State Park		Protects an urbanized tributary of the Schuylkill River, which features a gorge and thick woodlands.