Swamp White Oak

Mile 177.9 - Beside the bench, there's a plaque that reads:

This tree is the most outstanding Swamp White Oak specimen known in the State of Maryland.  It is listed as a Maryland State record in the Maryland Big Tree Champion program.  In 1991, the tree was 16 feet, 2 inches in circumference 4 feet above the ground.  The tree was 82 feet high with a spread of  84 feet.

And if that doesn't impress you, you can always rest yourself on the bench.