Ancient Maya (IMAGE) University of Cincinnati Caption University of Cincinnati professors David Lentz and Nicholas Dunning take samples for DNA and pollen analysis at an excavation in the ancient Maya city of Yaxnohcah in Mexico's Yucatan Peninsula. Credit UC Usage Restrictions None License Original 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.