Hand Stencils in Indonesia
Hand stencils are one of the most common forms of prehistoric rock art. Tens of thousands of years ago, people all over the world—including children—left their mark by holding their hands up to cave walls and blowing colored pigment around them to create an outline.
Using uranium-series dating—a technique that measures the decay of radioactive elements in mineral deposits that form over cave art—Aubert’s research team identified a faded 67,800-year-old hand stencil in the Liang Metanduno cave on Muna Island, off the coast of Sulawesi, Indonesia. Aubert says the stencil artist could have been a modern human (Homo sapiens) or another human ancestor.
In addition to being the oldest known example of cave art (for now), the hand stencil has a unique design: At least one of the fingertips appears pointy and clawlike, as though the artist retouched or reshaped it.
“That’s a style that we’ve identified in Sulawesi before,” Aubert says, who co-authored a paper about the discovery in 2026. “It’s a style that, as far as we know, is unique to Sulawesi.”
Sulawesi sits along ancient migration routes that early humans used as they moved through Southeast Asia toward Australia. When Aubert and his colleagues began documenting cave art on and around Sulawesi dated to be 35,000 years old or more, their findings were met with skepticism; many researchers believe cave art to be a phenomenon that emerged in Europe. Aubert’s work challenges this view by documenting various types of cave art in Southeast Asia that predate known European examples.