The Ice Cap on Mars's North Pole (IMAGE) University of Copenhagen Caption The ice cap on Mars's north pole is primarily composed of water ice and containing a few percent of dust. It has a spiral structure formed by white, ice-covered areas and dark slopes where the layers in the ice cap can be seen Credit NASA/JPL/MSSS Usage Restrictions Credit required 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.