List of National Natural Landmarks in Maryland
Encyclopedia
These are the six National Natural Landmark
National Natural Landmark
The National Natural Landmark program recognizes and encourages the conservation of outstanding examples of the natural history of the United States. It is the only natural areas program of national scope that identifies and recognizes the best examples of biological and geological features in...

s in Maryland
Maryland
Maryland is a U.S. state located in the Mid Atlantic region of the United States, bordering Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware to its east...

.
Name Image Date Location County Description
1 Battle Creek Cypress Swamp
Battle Creek Cypress Swamp
Battle Creek Cypress SwampThe Battle Creek Cypress Swamp, Maryland, in springDesignationU.S. National Natural LandmarkLocationCalvert County, MarylandNearest CityPrince Frederick, MarylandAreaAbout 100 acresAbout 40 ha...

Prince Frederick
Prince Frederick, Maryland
Prince Frederick is a census-designated place in Calvert County, Maryland, United States, not to be confused with the incorporated, and much larger, city of Frederick some to the northwest in Frederick County...

 38.490275°N 76.590773°W
Calvert
Calvert County, Maryland
Calvert County is a county located in the U.S. state of Maryland. It occupies the Calvert Peninsula which is bordered on the east by the Chesapeake Bay and on the west by the Patuxent River. Calvert County is part of the Southern Maryland region. Calvert County's residents are among the highest...

One of the northernmost sites of naturally occurring bald cypress (Taxodium distichum
Taxodium distichum
Taxodium distichum is a species of conifer native to the southeastern United States.-Characteristics:...

) trees in North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

, and the only large stand of the trees on the western shore of Maryland
Maryland
Maryland is a U.S. state located in the Mid Atlantic region of the United States, bordering Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware to its east...

. The site also contains a wide range of plant and animal life.
2 Belt Woods
Belt Woods
Belt Woods is a nature reserve in Prince George's County, Maryland, USA, containing the “South Woods”, a woodland which constitutes one of the last stands of virgin hardwood forest on the Atlantic coastal plain. It is a mere east of Washington, DC. Many of its white oaks and tulip poplars are...

Woodmore
Woodmore, Maryland
Woodmore is an unincorporated area and Census-designated place composed of a gated community and country club in Mitchellville, Maryland, one of the most affluent predominantly African-American communities in the United States...

 38.90505°N 76.76304°W
Prince Georges One of the few remaining old-growth upland forests in the Atlantic Coastal Plain
Atlantic Coastal Plain
The Atlantic coastal plain has both low elevation and low relief, but it is also a relatively flat landform extending from the New York Bight southward to a Georgia/Florida section of the Eastern Continental Divide, which demarcates the plain from the ACF River Basin in the Gulf Coastal Plain to...

 biophysiographic province
Physiographic province
A physiographic province is a geographic region with a specific geomorphology and often specific subsurface rock type or structural elements.A continent may be subdivided into various physiographic provinces, each having a specific character, relief, and environment which contributes to its...

. It is an example of upland hardwood forest dominated by tulip poplar and white oak
White oak
Quercus alba, the white oak, is one of the pre-eminent hardwoods of eastern North America. It is a long-lived oak of the Fagaceae family, native to eastern North America and found from southern Quebec west to eastern Minnesota and south to northern Florida and eastern Texas. Specimens have been...

. The Woods support a diverse bird population, including neotropical migrants.
3 Cranesville Swamp Nature Sanctuary Garrett
Garrett County, Maryland
Garrett County is the westernmost county of the U.S. state of Maryland. Created from Allegany County, Maryland in 1872 it was the last Maryland county to be formed. It was named for John Work Garrett , railroad executive, industrialist, and financier. Garrett served as president of the Baltimore...

A natural bowl where cool, moist conditions yield plant and animal communities more common in northern latitudes. Extends into Preston County, West Virginia
Preston County, West Virginia
As of the census of 2000, there were 29,334 people, 11,544 households, and 8,357 families residing in the county. The population density was 45 people per square mile . There were 13,444 housing units at an average density of 21 per square mile...

.
4 Gilpin's Falls Cecil
Cecil County, Maryland
Cecil County is a county located in the U.S. state of Maryland. It is part of the Delaware Valley. It was named for Cæcilius Calvert, 2nd Baron Baltimore , who was the first Proprietary Governor of the colony of Maryland from 1632 until his death in 1675. The county seat is Elkton. The newspaper...

Outcrop of undeformed early Paleozoic metavolcanic pillow basalts.
5 Long Green Creek and Sweathouse Branch Baltimore
Baltimore County, Maryland
Baltimore County is a county located in the northern part of the US state of Maryland. In 2010, its population was 805,029. It is part of the Baltimore-Washington Metropolitan Area. Its county seat is Towson. The name of the county was derived from the barony of the Proprietor of the Maryland...

A maturing beech-tulip poplar-white oak forest.
6 Sugarloaf Mountain Frederick
Frederick, Maryland
Frederick is a city in north-central Maryland. It is the county seat of Frederick County, the largest county by area in the state of Maryland. Frederick is an outlying community of the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area, which is part of a greater...

 39.269208°N 77.395248°W
Frederick
Frederick County, Maryland
Frederick County is a county located in the western part of the U.S. state of Maryland, bordering the southern border of Pennsylvania and the northeastern border of Virginia. As of the 2010 Census, the population was 233,385....

, Montgomery
Montgomery County, Maryland
Montgomery County is a county in the U.S. state of Maryland, situated just to the north of Washington, D.C., and southwest of the city of Baltimore. It is one of the most affluent counties in the United States, and has the highest percentage of residents over 25 years of age who hold post-graduate...

An outlier to the east of the main mass of the Catoctin Mountain, or a root remnant of the ancient Appalachia land mass.

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