Kakadu National Park, Ubirr Rock Art, Australia
"Some Aboriginal engravings and paintings are so old that we cannot know who made them, why they were made, or what their real meaning might be.
We can only guess, based on knowledge of Aboriginal life past and present, the stories and legends of Aboriginal people and, maybe, what the pictures look like to present-day eyes.
Other rock paintings, however, are relatively recent and are part of living tradition. They are still very important to people who know and respect their meanings.
A few are even repainted by men and women who have the traditional right to do so."