The link for the image is this one: http://www.esa.int/esa-mmg/mmg.pl?b=b&keyword=hale%20crater&single=y&start=2
Download the photo in Hi-Res Jpeg, lower the brightness a little bit, increase the contrast and you will find something like the photos bellow.
There are too many geometrical objects, parallel lines, square, cross and circular shapes, connected by roads.
