PASADENA, Calif., Oct. 7 (UPI) -- NASA's Mars Reconnaissance Orbiter spends much of its time watching the Red Planet's shifting sand dunes, which offer plenty of clues about erosion and weather patterns on Mar's surface.
But as a new image captured by MRO's High Resolution Imaging Science Experiment (HiRISE) camera reveals, high-res sand dune images can also offer insights into the nature of Mars' substrate -- the bedrock beneath the shifting sands.