Places We Protect

Third Haven Woods

Maryland / DC

A Delmarva fox squirrel rests on a log. A small brown squirrel stands on top of a fallen log. Its head is raised towards a thin twig with small red leaves as though considering having a nibble.
Delmarva fox squirrel The Delmarva fox squirrel conservation effort has been an increasing success. © Dave Spier

An unusually old hardwood forest on Maryland's Eastern Shore.



Third Haven Woods is one of the largest single blocks of forested upland not used for timber in the central Eastern Shore. It is a remnant of the forests that once covered much of the Delmarva Peninsula.

Although still relatively young, Third Haven will become an excellent example of old-growth forest in several hundred years.

The preserve provides habitat for a small population of the Delmarva fox squirrel (Sciurus niger cinereus), a recovering endemic subspecies that has been federally listed since 1973.  

There are no facilities, trails or established parking areas at this preserve.



Dogs are not allowed at this preserve.


Open year round for nature walks and birdwatching.


There are no facilities, trails or established parking areas.



Explore our work in Maryland / DC

Visiting Our Nature Preserves

Read our Preserve Guidelines to learn about permitted and prohibited uses, and ways of enjoying these spaces.

A NOTE ON HUNTING: Several TNC nature preserves in Maryland include hunting leases for deer management. Visit the Maryland Department of Natural Resources to find information on hunting season, licenses and access to public lands. When visiting a TNC nature preserve during hunting season, please wear blaze orange and try to avoid visiting in the early morning or evening hours when hunting is most active. For additional guidelines on how you can hike safely during the hunting season, visit the American Hiking Society.

Find More Places We Protect

The Nature Conservancy owns nearly 1,500 preserves covering more than 2.5 million acres across all 50 states. These lands protect wildlife and natural systems, serve as living laboratories for innovative science and connect people to the natural world.

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