In Pennsylvania, the altitude ranges from 1,750 to 3,000 feet and continues to rise toward West Virginia, where the elevation is around 4,800 feet. From West Virginia to Tennessee, the elevation lowers to 3,000 feet and continues slanting downward to 1,000 feet in Alabama. On the western side of the plateau, the elevation is 900 feet in Ohio, increasing to about 2,000 feet in Kentucky.