The Resolution cluster of craters

The Resolution cluster of craters
The Resolution cluster of craters A view from Mars Reconnaissance Orbiter HiRISE down onto the Resolution cluster of craters, which opportunity explored from sols 1820 to 1857. These craters' rays have vanished but the craters themselves are not covered by dunes (unlike the larger crater near the top of this image) so are probably old but not as old as the time when the dunes last moved, estimated to be around 100,000 years ago. The image covers an area 100 meters wide. NASA / JPL-Caltech / UA