Barchan Dunes on Mars

Barchan Dunes on Mars

The Mars Reconnaissance Orbiter's high-resolution imager HiRISE captured this false-color image of barchan sand dunes. They form when the wind blows predominantly in one direction. The “horns” of these crescent-shaped dunes point in the direction the wind is blowing. Barchan dunes are common on Mars and Earth.

  • Catalog Number: NASA-PIA17981
  • Credit: NASA/JPL-Caltech/University of Arizona
  • For print or commercial use please contact NASA/JPL-Caltech/University of Arizona
  • Large JPEG (640 x 400 pixels)