With the body on the floorboard out of view, they drove to their predetermined dumping spot near Wolf Lake in Hammond, Indiana, 25 miles (40 km) south of Chicago. After nightfall they removed and discarded Franks' clothes, then concealed the body in a culvert along the Pennsylvania Railroad tracks north of the lake. To obscure the body's identification they poured hydrochloric acid on the face, and on a distinctive abdominal scar, as well as the genitals (to conceal the fact that he was circumcised).[23]