The children were n't simply running their hands mindlessly along the cavern walls , however . Prehistoric children as young as three made cave art 13,000 years ago . ` ` Finger ##prints '' art forms found in French cavern system at Rouffignac . Images found high above ground suggest infants or children .
Prehistoric children as young as three made cave art 13,000 years ago . ` ` Finger ##prints '' art forms found in French cavern system at Rouffignac . Images found high above ground suggest infants or children .