ESA's Mars Express orbiter shot these photos in June, which would have been winter in the southern hemisphere. The terrain here is very old, which you can tell by the filled-in craters. The area also has smaller pedestal craters, where the ejected material forms a plateau in the surrounding area. ESA explains: "The ejecta surrounding pedestal craters form erosion-resistant layers, meaning that the immediate vicinity around the crater erodes more slowly than the surrounding terrain. The resistant ejecta layer is largely untouched, forming the pedestal." These stand out in three dimensions thanks to the Mars Express stereo camera.