 All of this is consistent with a westward journey from Chester County to Hummelstown, perhaps along a route approximated by US Route 322.In 1802, William came to the place that would be his home for the last nineteen years of his life.The cave (today known as Indian Echo Caverns) where William set up residence is located at the foot of a high bluff, or "palisades," at the head of a horseshoe bend on the Swatara Creek, approximately upstream from where it meets the Susquehanna River at Middletown.