More information and Url to Nasa photo at appointed category ! More Another photo there as well with a lot of information from what I think are clear indications of outside sculptures "morphing to show a metaphor of creatures falling from shoes that have been ripped apart and falling! But notice the colored photo of extra red, that seems to be embellished by Nasa in my opinion, as if to not make the black and white photo too clear!
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!