Shenandoah Mountain is a mountain ridge approximately 73 miles long in Virginia and West Virginia. The steep, narrow, sandstone-capped ridge extends from northern Bath County, Virginia to southern Hardy County, West Virginia. Along the way, its crest defines the borders between Highland and Augusta counties, Virginia, and between Pendleton Co…Shenandoah Mountain is a mountain ridge approximately 73 miles long in Virginia and West Virginia. The steep, narrow, sandstone-capped ridge extends from northern Bath County, Virginia to southern Hardy County, West Virginia. Along the way, its crest defines the borders between Highland and Augusta counties, Virginia, and between Pendleton County, West Virginia, and Rockingham County, Virginia. Its high point is 4397’/1340 m Reddish Knob along the Virginia/West Virginia border.