This is a close-up 3-D image of the surface.

Mars

This is an image of Mars. (Courtesy of NASA/JPL)

Clouds of Mars from Mars Pathfinder. (Courtesy JPL/NASA)

Sand dune images from the Viking I landing site, Chryse Planitia Basin.

The Mermaid dune from Mars Pathfinder. (Courtesy JPL/NASA)

This is a photograph of the Viking Lander 1 site of the surface and atmosphere of Mars.
NASA/JPL

This is an image of the Viking Lander 2 site on Mars. (Courtesy of Mary A. Dale-Bannister, Washington University in St. Louis)