These are the sixNational Natural Landmarks inMaryland.
| Name | Image | Date | Location | County | Ownership | Description |
|---|---|---|---|---|---|---|
| Battle Creek Cypress Swamp |  | April 1965 | Prince Frederick38°29′25″N76°35′27″W / 38.490275°N 76.590773°W /38.490275; -76.590773 (Battle Creek Cyprus Swamp) | Calvert | private (The Nature Conservancy) | One of the northernmost sites of naturally occurring bald cypress (Taxodium distichum) trees inNorth America, and the only large stand of the trees on the western shore ofMaryland. The site also contains a wide range of plant and animal life. |
| Belt Woods |  | 1974 | Woodmore38°54′18″N76°45′47″W / 38.90505°N 76.76304°W /38.90505; -76.76304 (Belt Woods) | Prince George's | state (Department of Natural Resources) | One of the few remaining old-growth upland forests in theAtlantic Coastal Plainbiophysiographic province. It is an example of upland hardwood forest dominated bytulip poplar andwhite oak. The Woods support a diverse bird population, includingneotropical migrants. |
| Cranesville Swamp Nature Sanctuary |  | 1964 | 39°31′53″N79°28′55″W / 39.531389°N 79.481944°W /39.531389; -79.481944 (Cranesville Swamp Preserve) | Garrett | private (The Nature Conservancy) | A natural bowl where cool, moist conditions yield plant and animal communities more common in northern latitudes. Extends intoPreston County, West Virginia. |
| Gilpin's Falls | 1980 | Cecil | private | Outcrop of undeformed early Paleozoic metavolcanicpillow basalts. | ||
| Long Green Creek and Sweathouse Branch | 1977 | Baltimore | state (Department of Natural Resources) | A maturing beech-tulip poplar-white oak forest. | ||
| Sugarloaf Mountain |  | June 1969 | Frederick39°16′09″N77°23′43″W / 39.269208°N 77.395248°W /39.269208; -77.395248 (Sugarloaf Mountain) | Frederick,Montgomery | private | An outlier to the east of the main mass of the Catoctin Mountain, or a root remnant of the ancient Appalachia land mass. |
