How long is the extension of the blue ridge mountain range that Nichol's Gap Road was built over?
South Mountain (Maryland and Pennsylvania) South Mountain is the northern extension of the Blue Ridge Mountain range in Maryland and Pennsylvania. From the Potomac River near Knoxville, Maryland, in the south, to Dillsburg, Pennsylvania, in the north, the 70 mi range separates the Hagerstown and Cumberland valleys from the Piedmont regions of the two states. The Appalachian National Scenic Trail follows the crest of the mountain through Maryland and a portion of Pennsylvania.
U.S. Route 129 in North Carolina U.S. Route 129 (US 129) is a north–south United States highway that travels 63.5 mi through the westernmost part of North Carolina. Traveling from the Georgia state line near Bellview, to the Tennessee state line at Deals Gap, it is known for its scenic mountain valley vistas and curvy mountain bends popular with motorcycle and sports car enthusiasts.