Dendritic Furrows on Martian Dunes (IMAGE) Trinity College Dublin Caption Dendritic furrows on Martian dunes (white arrows). Yellow arrows point to boulders, red arrows denote dark fans. Credit NASA/JPL/University of Arizona 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.