If you don't ZOOM you're out of tune :) If you don't think Martians use "subtle" art, you'll never get their artistry! You need to understand that is their style of sculpturing! That and "multiple" meanings. Example: We use art usually with one arm and a hand going in one direction! But Martians have an "arm" that has a hand going from the end of an arm which is standard. But the other end of an arm,, they put in another hand etc. Check out what I'm saying in the first image towards the lower end of the photo!
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!