Kakadu National Park is located within the Alligator Rivers Region of the Northern Territory of Australia. It covers an area of 19,804 km2,extending nearly 200 kilometres from north to south and over 100 kilometres from east to west. It is the size of Slovenia, about one-third the size of Tasmania, or nearly half the size of Switzerland. The Ranger Uranium Mine, one of the most productive uranium mines in the world, is surrounded by the park.The name Kakadu comes from the mispronunciation of Gaagudju, which is the name of an Aboriginal language formerly spoken in the northern part of the park. Kakadu is ecologically and biologically diverse.The cultural and natural values of Kakadu National Park were recognised internationally when the park was placed on the UNESCO World Heritage List. This is an international register of properties that are recognised as having outstanding cultural or natural values of international significance. Kakadu was listed in three stages: stage 1 in 1981, stage 2 in 1987, and the entire park in 1992.Approximately half of the land in Kakadu is aboriginal land under the Aboriginal Land Rights Act 1976, and 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 commonwealth land vested under the Director of National Parks. All of Kakadu is declared a national park under the Environment Protection and Biodiversity Conservation Act 1999.The Aboriginal traditional owners of the park are descendants of various clan groups from the Kakadu area and have longstanding affiliations with this country. Their lifestyle has changed in recent years, but their traditional customs and beliefs remain very important. About 500 Aboriginal people live in the park, many of them are traditional owners. All of Kakadu is jointly managed by Aboriginal traditional owners and the Australian Government’s Department of the Environment and Water Resources through a division known as Parks Australia. Park Management is directed by the Kakadu Board of Management.