Allegheny Mountains

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The Allegheny Mountains ( AL-ih-GAY-nee) are a mountain range situated in the eastern United States. A sub-range of the much vaster Appalachian Mountains, they extend roughly 300 miles (480 km) along a northeast-southwest orientation from north-central Pennsylvania southwestward, through western Maryland and eastern West Virginia. The peaks further continue into portions of Virginia and Tennessee as the Cumberland Mountains—which are essentially part of the same landform—while giving way to the Ridge and Valley Appalachians in the east and northeast. The Alleghenies comprise a rugged central portion of the Appalachians, rising to 4,862 feet (1,482 m) at Spruce Mountain in Pendleton County, West Virginia. In the east, they are dominated by a high, steep escarpment known as the Allegheny Front. In the west, they slope down into the closely associated Allegheny Plateau, which extends into portions of Ohio, Kentucky, and Upstate New York. The mountains consist primarily of sandstone and quartzite...

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