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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.
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.)
Other high points along the front include the Dolly Sods Wilderness in West Virginia, a broad, rocky plateau at an elevation of about 4,000 feet (1,200 m); Dan's Rock on Dans Mountain in Maryland at 2,895 feet (882 m); and Blue Knob in northern Bedford County, Pennsylvania, with an elevation greater than 3,120 feet (950 m).
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The Allegheny Front seen in the right of this photograph Blue Knob in Pennsylvania and its wintry valley below This list of ridges and summits of the Allegheny Mountains identifies geographic elevations for about 500 miles (800 km) from north central Pennsylvania , through eastern West Virginia and western Maryland , to western Virginia in the ...
The escarpment in which Red Rock Mountain is located is a part of the Allegheny Plateau. This summit features a firetower, known as "Grandview" all located within the Ricketts Glen State Park . The views from the top of the mountain are impressive and varied.
These plateaus, such as the Allegheny Plateau, are considered provinces of the Appalachian Highlands and the mountains assigned to them are instead considered pieces of dissected plateaus. [ 4 ] Additionally, subranges and ridges of subranges (Such as the Yew Mountains ) are inconsistently related to the Appalachian Mountain Range.
The plateau has a slight slant towards the northwest, making it higher on the eastern side. [2] A large portion of the plateau is a coalfield, which was formed approximately 320 million years ago during the Pennsylvanian Age. [3] The plateau was subjected to glaciation during the Pleistocene ice age. As a result, the topography of this section ...