The Great Dividing Range is the boundary to the south-east. It includes the towns of Dungowan, Ogunbil, Woolomin, Loomberah, Piallamore and Nundle.
The Great Dividing Range acts as a boundary to the south-east. The towns of Dungowan, Ogunbil, Woolomin, Loomberah, Piallamore, and Nundle are located within this range.