Re: Probably just shadows
Funny how every single time someone sees something weird on mars it winds up being "Shadows". The thing that gets me is that the images are from 12 Sols apart, if the rover had moved during that period then the hypothesis about the rover's wheels kicking out rocks is pretty plausible.
This isn't the stupid "face" in Cydonia, which the SAR images/scans prove that its just a oddly shaped weathered hill. This is pretty clearly a rock that is resting right in front of the field of view. I would generally say that its been moved by wind, but IIRC Mars doesn't have enough atmospheric pressure to have strong enough winds to push rocks bigger than pebbles.
Also if NASA had included a scale for reference, it would have been nice. If its the size of a pebble as opposed to the size of a doughnut, then hell, it very well could have been wind.
That or amanfrommars dropped part of his breakfast. I'll bet there's an empty coffee cup about 50 meters away.