Mars: The God Of War

OK, I just couldn't resist this one.
With the news that scientists have discovered Methane on Mars this week, people are speculating if this is part of a gradual disclosure of further evidence of life on Mars.
I'm sure that it freaks some people out, but I have no reason to believe that we on Earth are (A) nothing more than evolved space trash or (B) the product of ancient genetic manipulation.
Looking at these photos of the Martian landscape, you can't help but think many of these features are the product of some kind of technological civilization.
If anyone out there knows of a source that can debunk these photos and prove them altered beyond adding contrast for clarity, please let me know.