(IMAGE) University of Liège Caption Combination of impact traces on an archaeological artefact that could be identified as a spearthrower dart thanks to the experiments. Credit ©TraceoLab/ULiège Usage Restrictions No commercial use License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.