High Quality Content by WIKIPEDIA articles! Rock art is a term in archaeology for any man-made markings made on natural stone. The earliest evidence of painting derives from archaeological sites in two rock-shelters in Arnhem Land, in northern Australia. In the lowest layer of material at these sites there are used pieces of ochre estimated to be 60,000 years old. Archaeologists have also found a fragment of rock painting preserved in a limestone rock-shelter in the Kimberley region of North-Western Australia dated at 40 000 years old. Pigments from the "Bradshaw paintings" of the Kimberley are so old they have become part of the rock itself, making carbon dating impossible. Some experts suggest that these paintings are in the vicinity of 50,000 years old and may even pre-date aboriginal settlement.

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