<iframe width="480" height="390" src="http://www.youtube.com/embed/sTJt0LJZG2k" frameborder="0" allowfullscreen></iframe> I tried this myself on Google Earth/Mars and it's definitely there (71 49 19.73N 29 33 06.53W). The feature is 700 ft X 200 ft. The resolution is poor. Spoiler Possibly 1) a prank by Google 2) an imperfection on the photo
Saw this a few days ago.... didn't think much of it... I can show you free standing structures on the moon (buildings, towers, antennas ect....) that cast their own shadow. I'd like to find out more about these before I look into a blurred photo of something on Mars.
Doesn't google throw stuff on those maps just for kicks? Seem to recall that they had Nessie on there at one point, or something like that.
there used to be a small town on mars, then there was a walmart, then all the local businesses in the town shut down, then the people left, what you are looking at is the top of an abandoned walmart.