Mountains and hills of England the Pennines (often called "the backbone of England") continues into the Yorkshire Dales, a limestone-dominated area of broad valleys and moorland. The Yorkshire Three Peaks are some of the highest summits in the area, which became a national park in 1954. The Yorkshire Dales end at Skipton, and a short distance to the south is a range of moors that rises up between the urban cores of Greater Manchester and West Yorkshire. The range has no continuous name - the western part as far as Blackburn is called the West Pennine Moors, the eastern part north of the A646 (including
Backbone Mountain Mississippi River, lie just northwest of the mountain, whereas the headwaters of the North Branch of the Potomac River lie just south of the mountain, along the West Virginia-Maryland border. The ridge is crossed twice by U.S. Route 219, once north of Parsons and again near Silver Lake. It is also crossed by U.S. Route 50 east of Red House, Maryland, which is marked by a Maryland State Highway Administration sign. Located just inside of Maryland along Backbone Mountain is Hoye-Crest. At an elevation of , it is the highest point in the state of Maryland. The location, named for