About half of the land in Kakadu is aboriginal land under the Aboriginal Land Rights (Northern Territory) Act 1976. Most of the remaining land is currently under claim by Aboriginal people. The areas of the Park that are owned by Aboriginal people are leased by the traditional owners to the Director of National Parks to be managed as a national park. The remaining area is Australian Government land controlled by the Director of National Parks. All of Kakadu is declared a national park under the Environment Protection and Biodiversity Conservation Act 1999.