This image was targeted to look at lava flows in east Daedalia Planum. The flows here have different brightnesses (reflectivity) which may indicate different compositions.
The subimage shows another aspect of the image . A small 0.5 kilometer diameter crater shows a regular structure of aligned ridges in its interior. The origin of this structure is unclear but may be related to the breach in the crater rim to the left.
Written by: Nicolas Thomas (audio by Tre Gibbs) (19 September 2012)
More info and image formats at http://hirise.lpl.arizona.edu/ESP_017347_1585
Image: NASA/JPL/University of Arizona