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A 1775 map of the Allegheny Plateau and Mountain Range. Trans-Allegheny travel had been facilitated when a military trail—Braddock Road—was blazed and opened by the Ohio Company in 1751. (It followed an earlier Indian and pioneer trail known as Nemacolin's Path.)
Spruce Mountain, visible behind Judy Rocks, in eastern West Virginia; the summit of Spruce Mountain, Spruce Knob, is the highest point in the Alleghenies at 4,863 feet (1,482 meters). Allegheny Mountains in the Monongahela National Forest of West Virginia seen from the slopes of Back Allegheny Mountain looking east.
The Allegheny Ridge is prominently shown in the map center-left, the gaps of the Allegheny Front are located in the border area between Cambria County (uplands) and Huntingdon County (lowlands). USGS - Appalachians Mountain chain showing the lines of the barrier ridges in central, western, and northwestern Pennsylvania.
The Allegheny Front is the major southeast- or east-facing escarpment in the Allegheny Mountains in southern Pennsylvania, western Maryland, eastern West Virginia, and western Virginia. The Allegheny Front forms the boundary between the Ridge-and-Valley Appalachians to its east and the Appalachian Plateau (locally called the Allegheny Plateau ...
The Allegheny Plateau (/ ˌ æ l ɪ ˈ ɡ eɪ n i / AL-ig-AY-nee) is a large dissected plateau area of the Appalachian Mountains in western and central New York, northern and western Pennsylvania, northern and western West Virginia, and eastern Ohio. It is divided into the unglaciated Allegheny Plateau and the glaciated Allegheny Plateau.
Chestnut Ridge is the westernmost ridge of the Allegheny Mountains in Pennsylvania, United States. It is located primarily within the Laurel Highlands region of southwestern Pennsylvania , extending into northern West Virginia .
Allegheny Mountain is a stratigraphic ridge that extends northeast to southwest from south of Blue Knob to a saddle point at the Savage Mountain anticline. It merges with Negro Mountain just north of the Cambria County line where the Berlin - Salisbury basin expires.
The following is a list of subranges within the Appalachian Mountains, a mountain range stretching ~2,050 miles from Newfoundland and Labrador, Canada to Alabama, US. The Appalachians, at their initial formation, were a part of the larger Central Pangean Mountains along with the Scottish Highlands , the Ouachita Mountains , and the Anti-Atlas ...