Complex sentence: Catoctin Mountain Park, a unit of the National Park Service in Maryland, USA, is part of the forested Catoctin Mountain ridge that forms the eastern rampart of the Appalachian Mountains, this mountain park has sparkling streams and panoramic vistas of the Monocacy Valley.
Split into simpler sentences: Catoctin Mountain Park, a unit of the National Park Service in Maryland, USA, is part of the forested Catoctin Mountain ridge that forms the eastern rampart of the Appalachian Mountains. This mountain park has sparkling streams and panoramic vistas of the Monocacy Valley.