The Top End of northern Australia is a geographical region encompassing the northernmost section of the Northern Territory, which is the second northernmost part of the Australian continent. It covers a rather vaguely defined area of perhaps behind the northern coast from the Northern Territory capital of Darwin across to Arnhem Land with the Indian Ocean on the west, the Arafura Sea to the north, and the Gulf of Carpentaria to the east, and with the almost waterless semi-arid interior of Australia to the south, beyond the huge Kakadu National Park.