Here is a texture, when I first saw it I would swear it was sand, but look close at the texture. Notice how it has a polished granite look in sculpture form. Maybe it's of algae and is molding like a plastic, or a Corian look etc. But upon a closer look, it sure doesn't have the look of sand! Rather that the sand is covering it and the polished smooth stone look in sculpture form seems to shine through, that is unless Nasa is playing tricks. Or this is a bit of their revealing process of a current creative civilization !
The analysis I use for the photos and imagery are not mean't to be exacting, only to get you closer to understanding that there is intelligent life on mars (martians). Many of the rocks you may think are rocks, are in fact highly designed sculptures, mechanical objects etc.
Nasa is trying to leak out anomalous imagery with out of course talking about it public! Though most images have been doctored, Nasa is trying to humbly and quietly nudge us along with out going too public about it vocally. Though it is work and painstaking effort to find objects in the images that have not been altered in some way!