Endurance Crater - Mars Rover Opportunity
This approximate true-color image taken by the panoramic camera on the Mars Exploration Rover Opportunity shows the impact crater known as Endurance. The crater's exposed walls provide a window to what lies beneath the surface of Mars and thus what geologic processes occurred there in the past. While recent studies of the smaller crater nicknamed "Eagle" revealed an evaporating body of salty water, that crater was not deep enough to indicate what came before the water.
This image mosaic was taken by the panoramic camera's 480-, 530- and 750-nanometer filters on sols 97 and 98. It consists of a total of 258 individual images.