Remodeled tomb mortar (IMAGE) University of Utah Caption Scanning electron microscope image of the tomb mortar. The intact and wispy C-A-S-H features appear as gray, while the volcanic aggregate appears as white. Credit Marie Jackson Usage Restrictions Credit must be given to the creator. No derivatives or adaptations of the work are permitted. License CC BY-ND 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.