Complex sentence: It rises to its greatest elevation of 1,885 feet (575 m) above sea-level in Catoctin Mountain Park and is transected by a gap at Point of Rocks on the Potomac River.
Split into simpler sentences: It rises to its greatest elevation of 1,885 feet (575 m) above sea-level in Catoctin Mountain Park. It is transected by a gap at Point of Rocks on the Potomac River.