Arnhem Land is famous for its Aboriginal rock art. Some of the best art can be found at Ubirr Rock, Injalak Hill, and in the Canon Hill area. Some of these show early visits by Europeans, sometimes in such detail that Martini-Henry rifles can be identified. Other paintings show axes, aircraft and ships. In one rock shelter, hundreds of kilometres from Darwin, there is a painting the wharf at Darwin. It shows buildings and boats, the Europeans with their hats and pipes. Some are shown without hands, which they have in their pockets. There is a painting, near the East Alligator River crossing, which shows a man with a gun and long pigtails down his back. This would be one of the Chinese workers brought to Darwin in the late 19th century. The people also make ritual sand sculptures which do not last.