A remote cave system in the Blue Mountains of Australia has yielded a stunning collection of 18,000-year-old rock art featuring unique 'obsidian-inlay' techniques. The murals depict extinct giant kangaroos (Procoptodon goliah) with physical fragments of translucent volcanic glass embedded directly into the pigment. When illuminated by firelight, the obsidian flakes create a shimmering effect, designed to simulate the glistening of an animal’s eyes and fur, representing a sophisticated leap in Ice Age artistic expression.
The discovery was made by a team of Indigenous rangers and archaeologists from Macquarie University. The site also contains several 'lithic toolkits' used specifically for carving the rock face to accept the glass inlays. Researchers believe the cave served as a ritual space where hunters would engage in 'sympathetic magic' to ensure success in tracking the megafauna that once dominated the Australian landscape.