&sq=&lang=&file=File:Question_book-new.svg){kind=small} | This article needs additional citations for verification. (September 2011) |
| South Mountain | |
|---|---|
&sq=&lang=&file=File:South_Mountain-airphoto.jpg) Northward view of South Mountain near Interstate 70 in Maryland | |
| Highest point | |
| Peak | Quirauk Mountain |
| Elevation | 2,150 ft (660 m) |
| Coordinates | 39°41′46″N 77°30′47″W / 39.696°N 77.513°W |
| Dimensions | |
| Length | 70 mi (110 km) |
| Width | 12 mi (19 km) |
| Geography | |
&sq=&lang=&file=File:Appalachian_map.svg) Appalachian Mountains | |
| Country | United States |
| States | Maryland and Pennsylvania |
| Range coordinates | 39°43.2′N 77°29.5′W / 39.7200°N 77.4917°W |
| Parent range | Blue Ridge Mountains |
| Geology | |
| Orogeny | Grenville orogeny |
| Rock type(s) | Granite, gneiss and limestone |
South Mountain is the northern extension of the Blue Ridge Mountain range into Maryland and Pennsylvania. From the Potomac River near Knoxville, Maryland in the south to Dillsburg, Pennsylvania in York County, Pennsylvania in the north, the 70-mile-long (110 km) range separates the Hagerstown and Cumberland valleys from the Piedmont regions of the two states.
The Appalachian Trail follows the crest of the mountain through Maryland and a portion of Pennsylvania.