Maat Mons (IMAGE) Cornell University Caption Maat Mons, a large volcano on Venus, is shown in this 1991 simulated-color radar image from NASA's Magellan spacecraft mission. Credit NASA/JPL Usage Restrictions With appropriate 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.