Kakadu National Park covers an area of 19,804 square kilometres within the Alligator Rivers region of the Northern Territory. The park runs 150 kilometres south from the coast to the southern hills and basins, and 120 kilometres east from the Arnhem Land sandstone plateau to its western boundary. Around 50 per cent of the land in Kakadu National Park is Aboriginal land under the Aboriginal Land Rights (Northern Territory) Act 1976. Title to Aboriginal land in the park is held by Aboriginal land trusts. The land trusts have leased their land to the Director of National Parks so that it can be used as a national park for the enjoyment and benefit of all Australians.