Tepos Grand Plaza (IMAGE) Max Planck Institute of Geoanthropology Caption Excavated structure at the northern edge of the Grand Plaza at Teposcolula-Yucundaa. Architectural investigations of the Grand Plaza resulted in the unexpected discovery of a large epidemic cemetery associated with the 1545-1550 cocoliztli epidemic. The cemetery was found to contain numerous mass burials, attesting to the catastrophic nature of the epidemic. Credit Christina Warinner. Image courtesy of the Teposcolula-Yucundaa Archaeological Project. Usage Restrictions Only with specified credit. 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.