Depending upon the group of which the artist is a member, symbols such as campfire, tree, hill, digging gap, waterhole, or spring can vary in that means. Use of the image could be clarified additional by means of color, corresponding to water being depicted in blue or black. The oldest examples of rock art, in Western Australia’s Pilbara region and the Olary district of South Australia, are estimated to be up to around 40,000 years old. The oldest firmly dated proof of rock art painting in Australia is a charcoal drawing on a small rock fragment found Art Galery during the excavation of the Narwala Gabarnmang rock shelter in south-western Arnhem Land in the Northern Territory. Dated at 28,000 years, it is among the oldest recognized pieces of rock art on Earth with a confirmed date. It is believed this decorated fragment might have once fashioned half of a larger ceiling artwork, nevertheless, the form of the unique motif is unknown.
