Stone Axe (IMAGE) Field Museum Caption This is a stone axe found at the base of a tree during a forest inventory in Yasuní National Park, Amazonian Ecuador. Credit (c) Nigel Pitman, The Field Museum Usage Restrictions Please include credit: (c) Nigel Pitman, The Field Museum 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.