Mount Davis is the highest point in Pennsylvania. Located in Forbes State Forest near the hamlet of Markleton in Elk Lick Township, Somerset County, it lies on a gentle crest of a 30-mile ridge extending from central Somerset County southward into Garrett County, Maryland, where it is known as Negro Mountain. A parcel of land on top of the mountain h…Mount Davis is the highest point in Pennsylvania. Located in Forbes State Forest near the hamlet of Markleton in Elk Lick Township, Somerset County, it lies on a gentle crest of a 30-mile ridge extending from central Somerset County southward into Garrett County, Maryland, where it is known as Negro Mountain. A parcel of land on top of the mountain has been protected as Mount Davis Natural Area.