Did you know that Pennsylvania has a Grand Canyon. It may not be as grand as the one in Arizona, but it definitely has some great outdoor activities to explore.
You can find adventure though biking, hiking, kayaking, canoeing, camping, etc in the PA Grand Canyon.
Head over to Pine Creek Outfitters for rentals of all the gear you may need to explore this beautiful, remote area. Visit some of the surrounding rural towns of Wellsboro or Coudersport. Both have some very small town charm.