Caledonia State Park, just north of the Maryland state line, between Chambersburg and Gettysburg offers 10 miles of hiking trails on 1,125-acres.
Hike away stress and climb Charcoal Hearth Trail, which is the longest and most rugged trail in the park. At 2.7 miles, the trail climbs steeply up Graeffenburg Mountain before leveling off then descending gradually and ending near a quiet stream, there you'll find peaceful sounds of a babbling brook.