"This completely updated fourth edition does much more than guide day hikers and adventurous backpackers into some of the most stunning countryside north of Route 60. It offers an in-depth exploration of the human and natural history that contributes to the compelling story of the region. You'll learn what events in human history occurred nearby and you'll understand how the landscape helped shape those events. From the rugged summits of the Allegheny Mountains to the gentle shores of Chesapeake Bay, this book explores more than 360 miles of pathways with up-to-date information on trail closures, route changes, and new territory,"--page [4] of cover.