This image along the southern interior floor of Gale Crater hosts many different landforms. Light-toned, scabby, and presumably hydrated materials on the crater floor are covered by large, darker-toned dunes.
The small crater, about 2 kilometers in diameter, in the middle of the image is filled with an enigmatic deposit that appears to have flowed into the crater from the south.
Written by: Sharon Wilson (audio: Tre Gibbs) (9 March 2016)
More info and image formats at http://hirise.lpl.arizona.edu/ESP_043961_1740
Image: NASA/JPL/University of Arizona