 Anticlines include the Laurel Hill Anticline, Centerville Dome, Boswell Dome, Negro Mountain Anticline, and an unnamed anticline between the Berlin and Wellersburg Synclines.The primary mountains within the county are (from west to east) Laurel Hill (which forms part of the western border), Negro Mountain, Meadow Mountain, Savage Mountain, and Allegheny Mountain.Negro Mountain also includes Mount Davis, the highest peak in Pennsylvania.