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.
Tomkins Knob Tomkins Mountain (variant names: Thomkins Knob, Thompkins Knob and Tompkins Knob) is a mountain in the North Carolina High Country, near the community of Deep Gap. The majority of the mountain is within the Blue Ridge Parkway. Its elevation reaches 4075 ft and it also marks the corner between Ashe, Watauga, and Wilkes counties.