There are around six hundred to seven hundred rock art sites discovered in Southeast Asia and Island Melanesia, as well as over eight hundred megalithic sites. The sites specifically associated with the Austronesian expansion contain examples of indigenous pictograms and petroglyphs. Within Southeast Asia, the sites associated with Austronesians can be divided into three general rock art traditions: the Megalithic Culture of Borneo, Sulawesi, and the Greater Sunda Islands; the Austronesian Painting Tradition of the Lesser Sunda Islands, coastal New Guinea, and Island Melanesia; and the Austronesian Engraving Style of Papua New Guinea and Island Melanesia. Despite proximity, these traditions can be distinguished readily from the Australo-Melanesian rock art traditions of Australia (except the Torres Strait Islands) as well as the interior highlands of New Guinea, indicating the borders of the extent of the Austronesian expansion.