Here is an article I found important, on how methane has been found in abundance under the surface of the red planet: "If there is life on Mars, it is very likely it hides beneath the surface of this planet"! It goes on to talk about "methane"! From Zumfeed: http://zumfeed.com/space/176-life-could-exist-below-the-surface-of-mars.html
Of course a civilization would have immense proportions of methane If they live under the planet mars, in which I certainly think they must do.
Just too much indication that a civilization exists under the planet, from they way the thousands of memorials to sea creatures are green and not ancient looking, They way the memorials to sea creatures are stacked, and how many that are older are at the bottom of the stack. How so many diorama-like sculptures are so finely detailed with obvious stories to tell, and would of been destroyed by the winds and the elements of being on the surface through time.
Let alone the incredible testimony and so under rated Gary Wilcox! Of course Ernest Norman's book: "The Truth About Mars" !
There is so much that Nasa is telling us with out talking about it, just uploading their images, especially through Curiosity Rover. The real good ones are far and few between, that is what I am about with the images that I upload, especially from Curiosity. The "far and few between" ones :)
And methane is one of the first clues to us that are interested in getting through all the red tape of the red planet!
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!