* Piedmont Plateau: The Piedmont Plateau is a gently rolling upland that lies to the west of the coastal plain. It is made up of metamorphosed rocks that were formed during the Precambrian era. The Piedmont Plateau is home to a variety of landforms, including hills, valleys, and forests.
* New Jersey Highlands: The New Jersey Highlands is a mountainous region that lies to the northwest of the Piedmont Plateau. It is made up of igneous and metamorphic rocks that were formed during the Precambrian and Paleozoic eras. The New Jersey Highlands is home to a variety of landforms, including mountains, valleys, and forests.