Nourlangie Rock -Aboriginal Art -Kakadu National Park- Australia: Aboriginal people have occupied the Kakadu area continuously for at least 40 000 years. Kakadu National Park is renowned for the richness of its Aboriginal cultural sites. There are more than 5000 recorded art sites illustrating Aboriginal culture over thousands of years. The cultural and natural values of Kakadu National Park were recognised internationally when the Park was placed on the UNESCO World Heritage List.