Among the multiple zoomorphic and geometric images that dominate Upper Paleolithic decorated cave walls in Europe, some intriguing human hand stencils and finger flutings stand out. Dozens of these marks are attributed to toddlers and children aged 2–12. Accompanied by older group members, they entered these deep, oxygen-depleted and sensory-deprived spaces, climbing and crawling in dark, wet, difficult-to-navigate environments where one might easily get lost or separated from the group. So...
