Nasa's Mars Explorer Spirit sent back images from the surface of the Red Planet four years ago, and there was initial disappointment among scientists that they lacked any signs of life.
But space and science fiction enthusiasts are convinced there is more than meets the eye, and after years of studying the images, have found what appears to be an alien figure walking downhill.
It's obviously a rock heavily accented by shadow and JPG compression, but it does look like a passable humanoid torso. Coy little fella, huh?
UFOMystic comments here.