According to an archeologist in the area, the thylacene (the largest known carnivorous marsupial of modern times) was last seen in the Australian continent more than 3,500 years ago. Based on that, contemporary knowledge assumes that this kind of petroglyph dates from that time - as there are not organic materials involved, the age of the image cannot be accurately calculated. - This engraving was removed from its original location and taken to the office of a transnational conglomerate CEO in the Burrup. A few months later it was returned to its 'original' location and stucked with cement. Burrup Peninsula, Pilbara District, Western Australia.