 There is no camping allowed in the stretch between Alec Kennedy and Darlington shelters.In the northern half of the state, the AT climbs back up into the mountains and passes through St. Anthony's Wilderness, which is the second largest roadless area in Pennsylvania and home to several coal mining ghost towns, such as Yellow Springs and Rausch Gap.Trail towns that are commons stops with thru-hikers are Boiling Springs, Duncannon, Port Clinton, Palmerton, Wind Gap, and Delaware Water Gap.