List of National Natural Landmarks in Pennsylvania

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Last updated October 11, 2022

From List of National Natural Landmarks, these are the National Natural Landmarks in Pennsylvania. There are 27 in total.

	Name	Date	Location	County	Ownership	Description
1	Bear Meadows Natural Area	1965	40°24′22″N77°10′26″W / 40.406111°N 77.173889°W / 40.406111; -77.173889 (Bear Meadows Natural Area)	Centre	public/state Rothrock State Forest
2	Box Huckleberry Site	April 1967	40°24′22″N77°10′26″W / 40.406111°N 77.173889°W / 40.406111; -77.173889 (Box Huckleberry Site)	Perry	public/state Tuscarora State Forest	A 10-acre (4.0 ha) natural area which preserves a rare colony of box huckleberry over 1,000 years old.
3	Cook Forest State Park	November 1967	41°19′25″N79°09′50″W / 41.323611°N 79.163889°W / 41.323611; -79.163889 (Cook Forest)	Clarion Forest Jefferson	public/state	A 8,500-acre (3,440 ha) state park notable for its spectacular stands of old-growth Eastern White Pine and Eastern Hemlock, many from around 1644.
4	Ferncliff Peninsula Natural Area	1973	39°52′03″N79°29′54″W / 39.867555°N 79.498229°W / 39.867555; -79.498229 (Ferncliff Peninsula Natural Area)	Fayette	public/state Ohiopyle State Park	This 100-acre (40 ha) peninsula is formed by a meander in the Youghiogheny River. It is a good example of a late successional forests in the Allegheny Mountains
5	Ferncliff Wildflower and Wildlife Preserve	1972	39°46′57″N76°14′34″W / 39.78259°N 76.24274°W / 39.78259; -76.24274	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.
6	Florence Jones Reineman Wildlife Sanctuary	1973	40°16′0″N77°16′0″W / 40.26667°N 77.26667°W / 40.26667; -77.26667	Cumberland Perry	private/family trust	Contains a 3,100-acre (1,255 ha) diverse ecological community.
7	Pine Creek Gorge	1968	41°16′18″N77°19′37″W / 41.271667°N 77.326944°W / 41.271667; -77.326944 (Pine Creek Gorge)	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 160,000 acres (64,750 ha).
8	Hawk Mountain Sanctuary	1965	40°38′27″N75°59′32″W / 40.640833°N 75.992222°W / 40.640833; -75.992222 (Hawk Mountain Sanctuary)	Berks Schuylkill	private/nonprofit	A sanctuary on a Blue Mountain ridge, known as an excellent vantage point for hawk migrations.
9	Hearts Content Scenic Area	1973^[1] or 1977^[2]	41°41′28″N79°15′14″W / 41.691°N 79.254°W / 41.691; -79.254	Warren	public/federal Allegheny National Forest	An old-growth white pine forest of 120 acres (49 ha).
10	Hemlocks Natural Area	1972	40°14′18″N77°38′29″W / 40.238418°N 77.641379°W / 40.238418; -77.641379 (Hemlocks Natural Area)	Perry	public/state Tuscarora State Forest	Features numerous old growth hemlock trees.
11	Hickory Run Boulder Field	1967	41°02′10″N75°41′02″W / 41.036111°N 75.683889°W / 41.036111; -75.683889 (Hickory Run State Park)	Carbon	public/state Hickory Run State Park	A 16.5-acre (7 ha) landscape of sandstone boulders, which were formed approximately 20,000 years ago.
12	Lake Lacawac	1968	41°22′56″N75°17′31″W / 41.382289°N 75.292078°W / 41.382289; -75.292078 (Lake Lacawac)	Wayne	private/nonprofit	A 52-acre (21 ha) glacial lake surrounded by a hardwood conifer forest.
13	McConnells Mill State Park	1972	40°55′36″N80°11′24″W / 40.926667°N 80.19°W / 40.926667; -80.19 (McConnells Mill State Park)	Lawrence	public/state	Protects 2,546 acres (1,030 ha) of the Slippery Rock Creek gorge, including several waterfalls.
14	Monroe Border Fault	1980	40°34′47″N75°11′51″W / 40.579756°N 75.197556°W / 40.579756; -75.197556 (Monroe Border Fault)	Bucks	public/state Nockamixon State Park	An upland along the Delaware River, the area features a variety of exposed rocks from different geological ages.
15	Nay Aug Park Gorge and Waterfall	1989	41°24′05″N75°38′34″W / 41.401389°N 75.642778°W / 41.401389; -75.642778 (Nay Aug Park Gorge and Waterfall)	Lackawanna	public/municipal	Located in an urban park, it features a rock-strewn, heavily wooded gorge.
16	Nottingham Park Serpentine Barrens	2009	39°44′26″N76°02′21″W / 39.740507°N 76.039112°W / 39.740507; -76.039112 (Nottingham County Park)	Chester	private/nonprofit	A 651-acre (263 ha) 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.
17	Presque Isle State Park	1967	42°09′47″N80°06′03″W / 42.163056°N 80.100833°W / 42.163056; -80.100833 (Presque Isle State Park)	Erie	public/state	A 3,112-acre (1,259 ha) sandy peninsula stretching into Lake Erie.
18	Reynolds Spring and Algerine Swamp Bogs	1974	41°33′03″N77°29′51″W / 41.550902°N 77.497481°W / 41.550902; -77.497481	Tioga Lycoming	public/state Tioga State Forest	Contains two bogs of 1,302 acres (527 ha) and 84 acres (34 ha), which are surrounded by thick oak and pine groves.
19	The Glens Natural Area	1968	41°19′34″N76°16′46″W / 41.32611°N 76.27944°W / 41.32611; -76.27944 (Ricketts Glen State Park)	Columbia Sullivan Luzerne	public/state Ricketts Glen State Park	2,845 acres (1,151 ha) of old growth forest, with many trees exceed 100 feet (30 m) in height. Twenty two separate named waterfalls are located in the area.
20	Snyder Middleswarth Natural Area	1967	40°48′36″N77°16′59″W / 40.81°N 77.283056°W / 40.81; -77.283056 (Snyder Middleswarth Natural Area)	Snyder	public/state Bald Eagle State Forest	A hemlock, pine, and oak forest located on 500 acres (202 ha).
21	Susquehanna Water Gaps	1968	40°31′15″N76°58′44″W / 40.520918°N 76.978867°W / 40.520918; -76.978867 (Susquehanna Water Gaps)	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.
22	Tamarack Swamp	1977	41°59′20″N79°33′18″W / 41.989°N 79.555°W / 41.989; -79.555 (Tamarack Swamp)	Warren	public/state	An acidic kettle pond bog.
23	Tannersville Cranberry Bog	1974	41°2′24″N75°18′21.6″W / 41.04000°N 75.306000°W / 41.04000; -75.306000 (Tannersville Cranberry Bog)	Monroe	private/nonprofit	A 1,000-acre (405 ha) kettle lake fen.
24	John Heinz National Wildlife Refuge at Tinicum	1965	39°53′09″N75°15′44″W / 39.885866°N 75.262356°W / 39.885866; -75.262356	Philadelphia Delaware	public/federal	Protects a tidal marsh of 350 acres (142 ha) located in an urban environment.
25	Tionesta Scenic and Research Natural Areas	1973	41°38′42″N78°56′28″W / 41.645°N 78.941°W / 41.645; -78.941	Warren McKean	public/federal Allegheny National Forest	4,131 acres (1,672 ha) of old growth forest on the Allegheny Plateau.
26	Titus and Wattsburg Bogs	1977	41°56′36″N79°45′47″W / 41.943388°N 79.763107°W / 41.943388; -79.763107 (Titus and Wattsburg Bogs)	Erie	private/nonprofit	A peatland of 125 acres (51 ha) located near the shore of Lake Erie.
27	Wissahickon Valley	1964	40°00′58″N75°12′21″W / 40.016056°N 75.205744°W / 40.016056; -75.205744 (Wissahickon Valley)	Montgomery, Philadelphia	public/state Fort Washington State Park	Protects an urbanized tributary of the Schuylkill River, which features a gorge and thick woodlands.

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References

↑ "Hearts Content Scenic Area". National Park Service . Retrieved 2009-12-12.
↑ "Hearts Content Recreation Area". United States Forest Service. 2007-04-14. Retrieved 2008-01-15.

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
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[NPS-1] "Hearts Content Scenic Area". National Park Service . Retrieved 2009-12-12.

[USFS-2] "Hearts Content Recreation Area". United States Forest Service. 2007-04-14. Retrieved 2008-01-15.

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