A 67,800-year-old hand stencil in Indonesia's Liang Metanduno cave is now the world's oldest known human artwork. Archaeologist Adhi Agus Oktaviana and his team discovered it after surveying 44 sites over six years. The red pigment outline predates a Neanderthal stencil in Spain by 1,100 years, offering a direct link to early human symbolic behavior.

This find pushes back the timeline for human artistic expression in Southeast Asia. The Sulawesi region is already known for other ancient rock art, including a 51,200-year-old mural. The discovery supports the theory that a vibrant artistic culture existed there during the late Pleistocene, challenging assumptions about when and where abstract thought emerged.

The stencil is faint, preserved under a thin calcite layer. Researchers dated it by analyzing the uranium-thorium ratio in that mineral. Future work will likely focus on dating more art in the region's karst caves. This discovery also highlights the importance of preserving fragile archaeological sites threatened by environmental factors.