Today's Image of Mars is of gullies and lobate material in a crater in the Noreidum Montes. The area surrounding the impact site is devoid of ejecta and the crater is not as deep as one that size should be, meaning that the area was filled in.
The crater imaged below also has gullies on its northern side and extending toward the center. It also has an arc-shaped ridge inside the southern edge of the crater. This could be caused by wind erosion or accumulation of material filling the crater.
Clicking on this image will take you to the original captioned image from HiRISE.