Near Lenhartsville, PA is the site of the Blue Rocks. This glacial deposit makes for some great scenery, and a very rugged hiking environment. Not for recommended for beginners, or the older folk, such as myself. Best to just take a camera and enjoy from the footpaths.
Watch the video for some great views of the Blue Rocks, and interesting point-of-view camera-work as Jared films the path of his feet while crossing the rocks.