Mars No. 42-22377867
by NASA- JPL-Caltech - digital vers - © Corbis. All Rights Reserved. - © NASA- JPL-Caltech - digital vers/Science Faction/Corbis
Sand Dunes in Nili Patera Caldera Seen by Mars Reconnaissance Orbiter
Large barchan sand dunes overlay an ancient lava flow in Nili Patera, a volcanic caldera in Syrtis Major on Mars. Barchan dunes are somewhat crescent shaped, with two horns, and ripples behind the slip face. The bedrock is basalt. Digitally enhanced. --- Image by © NASA- JPL-Caltech - digital vers/Science Faction/Corbis



























