Oh the rocks. You know how your feet feel after standing or walking on concrete all day. Now imagine the concrete has been smashed and is a broken ruin of sharp, jagged rubble. Hiking 20 miles on it is hard on your feet, and legs, and back... it's just hard. The rocks are sometimes large car size boulders, sometimes basketball size, and always on the trail. Even the "road" we hiked down had rocks jutting up 2 or 3 inches waiting to bite your ankles, eat your boots, or just trip you. The rocks of Pennsylvania have earned their reputation, and I am glad to be leaving them behind when I cross into NJ tomorrow.