Archaeologists discovered a human fingerprint left on a rock in Spain now considered the oldest known human fingerprint. Experts believe a Neanderthal intentionally made the print roughly 43,000 years ago. The rock was used only for the art—a rarity for the ancient time period—rather than a tool or some other utilitarian usage. The Neanderthal was attempting to paint a face on a small granite pebble in what is now modern-day Spain. The authors believe the fingerprint was intentionally placed and the pigment suggests it was applied with the tip of a finger after being soaked in pigment.