Red Wall (IMAGE) European Synchrotron Radiation Facility Caption A wall showing the heavy damage due to blackening of cinnabar in the Poppea's villa in Oplonti. Credit Mario Pagano 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.