The area from Port Roper on the Gulf of Carpentaria around the coast to the East Alligator River, where it adjoins Kakadu National Park. The major centres are Jabiru on the Kakadu National Park border, Maningrida at the Liverpool River mouth, and Nhulunbuy (also known as Gove) in the far north-east, on the Gove Peninsula. Gove is the site of large-scale bauxite mining with an associated alumina refinery. Its administrative centre is the town of Nhulunbuy, the fourth-largest population centre in the Northern Territory.