I was led to this link of a Mars photo at space.com. The caption reads:
NASA'S Mars Exploration Rover Spirit captured this westward view from atop a low plateau where Sprit spent the closing months of 2007. Several bloggers and other enthusiasts have pointed to a tiny structure (red circle) on the Martian surface as a human figure and thus evidence of life on Mars. Credit: NASA/JPL-Caltech/Cornell University.I thought it was quite ironic, the Google Ad that was dispayed to the right of the image.