Finger Marks from Rouffignac Cave in France, 18,000–9000 B.C.E. The finger marks of a young child are among those made by a group of adults and children who each left such finger flutings in the wet surfaces of the cave, far from the entrance, indicating that they would have used torches to see as they decorated the walls and ceiling. Through comparing these finger marks with those made by girls’ and boys’ fingers today, archaeologists judge them to have been made by a girl. She ran the three middle fingers of each hand down the wall of the cave at the same time, which meant someone else was holding the torch for her to see. (© Leslie Van Gelder)