Excavations offer clues to how prehistoric hunters saw Côa valley animal engravings

New Scientist reports that excavations in Portugal’s Côa valley are yielding clues to how prehistoric hunter-gatherers saw its animal engravings. At the Penascosa site, archaeologists digging beside the rock art found thumbnail-sized slivers of razor-sharp stone used as hunting weapons. The team is investigating the function of the valley’s oldest rock art.