Holden Crater (IMAGE) University of Arizona Caption The HiRISE camera on the Mars Reconnaissance Orbiter took this image of the largest fan in Holden crater when the orbiter was flying about 162 miles over the surface in March 2007. Geologists discovered a complex geologic history for the site, including two wet episodes that may have been amenable to life. Credit NASA/JPL/University of Arizona Usage Restrictions Credit NASA/JPL/University of Arizona 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.