A petroglyph is an image created by removing part of a rock surface by incising, picking, carving, or abrading, as a form of rock art. The term generally refers to rock engravings of ancient origin, often associated with prehistoric peoples. The oldest petroglyphs in the world are deemed to be those at Murujuga in Western Australia, which are 40,000–50,000 years old. Some petroglyphs are classified as protected monuments and some have been added to the list of UNESCO's World Heritage Sites, or such status has been applied for.
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Rock carving in the context of Aboriginal art
Indigenous Australian art includes art made by Aboriginal Australians and Torres Strait Islanders, including collaborations with others. It includes works in a wide range of media including painting on leaves, bark painting, wood carving, rock carving, watercolour painting, sculpting, ceremonial clothing and sandpainting. The traditional visual symbols vary widely among the differing peoples' traditions, despite the common mistaken perception that dot painting is representative of all Aboriginal art.
View the full Wikipedia page for Aboriginal art