Posted by tourdemars to Planetology at September 13, 2005 12:49 AM

Scientists have found evidence that large amounts of water-ice hide within massive sand dunes on Mars. One of the dunes, called Kaiser Dune, which spans 6.5km and rises 475m above the Martian surface, is among the largest in the Solar System. The icy dunes could be a valuable resource for any future manned missions to the planet, said Dr Mary Bourke.