Landslides in Valles Marineris (IMAGE) Arizona State University Caption An outtake from the Mars mosaic captures a 90-mile-wide portion of the giant Valles Marineris canyon system. The image shows landslide debris and gullies in the canyon walls at 100 meters (330 feet) per pixel. Credit NASA/JPL/Arizona State University 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.