 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.Dating rock art is difficult, but some of the sites subjected to direct dating pre-date Austronesian arrival, like the Lene Hara paintings of East Timor which has an age range of 6,300 to 26,000 BP.Conversely, others are more recent and can be dated indirectly by their subjects.