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.
Citico Creek Wilderness Citico Creek Wilderness is a 16226 acre wilderness area within the Cherokee National Forest in the U.S. state of Tennessee. The wilderness contains the entire upper drainage of Citico Creek, which consists of the north and south forks and at least eight tributaries. Three steep-sided ridges descend west from the crest of the Unicoi Mountains — Brush Mountain, Pine Ridge, and Sassafras Ridge.