Excavating in Cerro Baul (IMAGE) Field Museum Caption Lead author Ryan Williams doing excavation work at the brewery site in Cerro Baul. Credit Field Museum Usage Restrictions Please include credit to 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.