Kakadu is one of the world heritage sites of Australia. It's not just because of its its vast and wild ecosystem, but because of the importance of Aboriginal culture that can be found in the park. There is something elusive in the aborigines and their art is but one of their ways of understanding life. The problem is to understand this art is just as difficult to understand them asa culture. It's worth visiting the numerous paintings. The most famous is that of Nourlangie Rock, which allegedly has been inhabited for the past 20,000 years, but the most recent paintings date back to 1960. You can see paintings depicting 18th century English ships.