Dunes on the Move (IMAGE) University of Arizona Caption In the study, the regions with the largest rates of dune movement were found to be at the boundary of Isidis Basin and Syrtis Major, the Hellespontus mountain range and surrounding the North polar ice cap. Credit NASA/JPL/Malin Space Science Systems Usage Restrictions This visual may only be used in conjunction with reporting on or posting of this news release. Credit must be given as indicated. 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.