Wilamaya Patjxa excavation (IMAGE) University of Wyoming Caption The Wilamaya Patjxa archeological site in Peru produced human remains showing that the diets of early people of the Andes were primarily composed of plant materials. Credit Randy Haas 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.