Smithsonian Magazine offers snapshots taken by Spirit and Opportunity over the past ten years.
Another bow to the engineers. They figured the two Rovers would last three months. Spirit lasted six years and Opportunity is still working, a decade in.
Check out the rounded rocks. A long-gone river?
A closeup of tiny spherical rocks clustered in a square inch of the Martian surface, captured by Opportunity. Full size version. (NASA/JPL-Caltech/Cornell/USGS/Cathy Weitz)