An out-and-back hike along the Pennsylvania AT from Pen Mar Park north over Mount Dunlop to the Old Forge Picnic Area. Start by descending into Falls Creek Valley, cross the bridged creek and then immediately climb to the top of Mount Dunlop. Proceed across undulating terrain then descend into Antietam Creek Valley for lunch, then return. This hike has no significant unbridged water crossings but does involve 2,800 feet of climbing spread over four primary ascents. When registering please indicate…