Clarks Knob

Clarks Knob is a summit in Franklin County, Pennsylvania. It is the highest point on Blue Mountain, the eastern front range of Pennsylvania's Ridge and Valley Appalachians region.

Geography
Clarks Knob's northeast-southwest running summit ridge forms the boundary of the Susquehanna River and Potomac River drainages. It stands over 1600 ft above the town of Chambersburg and the Great Appalachian Valley. This mountain is protected within the Buchanan State Forest.