Dry ice and sand dunes at Marss north pole

ESA’s Mars Express captured with its High Resolution Stereo Camera (HRSC) a region in Planum Boreum, at Mars’s north pole, where frozen carbon dioxide (dry ice) covers vast sand dunes, on 14 April 2023. Image credit: ESA/DLR/FU Berlin Music: “No.1 A Minor Waltz by Esther Abrami” courtesy of YouTube Audio Library Frozen carbon dioxide and sand dunes in Planum Boreum, Mars