Figure 2 (IMAGE) Compuscript Ltd Caption Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) image of part of the Atacama Desert, Chile, acquired in 2000, showing the giant Escondida-Zaldivar porphyry Cu-Au cluster. Credit GeoGeo Usage Restrictions Credit must be given to the creator. License CC BY 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.