Antiquity last year reported a startlingly old series of dates from Jinmium in tropical north Australia. At Jinmium are old rock engravings, the pecked cups or cupules that are widespread in Australia. The study of the Jinmium cupules goes beyond that immediate topic to broader issues.
Ouzman, S., Tacon, P., Mulvaney, K., & Fullagar, R. (1997). Cupule engravings from Jinmium-Granilpi (northern Australia) and beyond: exploration of a widespread and enigmatic class of rock markings. Antiquity: a quarterly review of archaeology, 71(274), 942-965. https://doi.org/10.1017/S0003598X00085847