Kakadu National Park is in the Northern Territory of Australia, 171 km southeast of Darwin. It is the second largest national park in the world. It covers an area of . It is about 200 kilometres from north to south, and more than 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 biggest Uranium mines in the world, is inside the park.