Back Allegheny Mountain is a long mountain ridge in eastern West Virginia. It is part of the Shavers Fork Mountain Complex in the Allegheny Range of the Appalachians. Back Allegheny Mountain runs 18 miles north to south and 8 miles east to west, covering a geographic area of 76 square miles. The mountain rises abruptly from the Greenbrier River valley i…Back Allegheny Mountain is a long mountain ridge in eastern West Virginia. It is part of the Shavers Fork Mountain Complex in the Allegheny Range of the Appalachians. Back Allegheny Mountain runs 18 miles north to south and 8 miles east to west, covering a geographic area of 76 square miles. The mountain rises abruptly from the Greenbrier River valley in Pocahontas County, West Virginia, and runs nearly parallel to Cheat Mountain to its west. The mountain reaches its elevational climax of 4,843 feet at Bald Knob, 5 miles north of Snowshoe Ski Resort. The second highest point on the mountain is Hosterman Benchmark West at 4,757 feet. Hosterman is approximately 3.3 miles north of Bald Knob.