The aboriginal cultures are the oldest extant cultures on Earth. We (Australians) would do well to remember that a little more often.
The 'white man' image is one of my favourites as it shows to wonderfully observant features - first the figure as no hands - because the person has their hands in their pockets - and secondly it has very big feet - because the person is wearing boots. I wonder what thoughts and conversations ran around the fire the night before that painting was made.
The hand / arm images show the fine silk gloves worn by European ladies at the time.
But possibly most remarkable is the image of the boat - this was drawn at a site called Nanguluwr in Kakadu. This may not be a British ship, but could be Dutch, as these boats had been sailing the waters to the north of Australia for a number of years before Cook 'discovered' the east coast of Australia.
You can find more shots from around the world at Our World Tuesday.