Classic Maya Stone Tool (IMAGE) Louisiana State University Caption Scientists analyzed the microscopic markings on excavated stone tools including this one to discover new findings about the ancient Maya from more than 1,000 years ago. Credit LSU Usage Restrictions None 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.