NASA / JPL-Caltech / Cornell / ASU / James Sorenson
Opportunity deck panorama, sol 3611-3613 (March 22-24, 2014)
While climbing Murray Ridge, Opportunity enjoyed a major cleaning event that left the rover's solar panels cleaner than they had been in many years, powering the rover up for science.
Compare the photo with this one, taken last Mars winter, with the rover nearly camouflaged against the dusty ground:
NASA / JPL / Cornell
Opportunity Deck Pan, December 2011 (sols 2811-2814)
Opportunity used its Pancam to take the images combined into this mosaic view of the rover. The downward-looking view omits the mast on which the camera is mounted. Heading into its fifth Martian winter, Opportunity's solar panels were dustier than ever, requiring the team to choose an area of high northward tilt to increase power.