Opportunity, one of the two Mars Exploration Rovers NASA is (still!) operating, has been in the news a bit this week as it prepares to move down into the biggest crater of its mission — Victoria Crater. I ran across this image, taken last week by the Mars Reconnaissance Orbiter as it passed overhead. The zig-zagging tracks from the rover’s wheels are clearly visible… Amazing. (NASA’s press release has the full-resolution image)
For a bit of scale, here’s the same crater, with a football stadium superimposed.