Mystery rock near the Mars rover Opportunity on Sol 3540 taken by Opportunity Panoramic Camera. Image credit: NASA
NASA MRO
2014-01-15 20:46:56
NASA MRO website, <a rel="nofollow" class="external free" href="http://marsrovers.jpl.nasa.gov/gallery/all/1/p/3540/1P442453196EFFCAEFP2594L2M1.JPG">http://marsrovers.jpl.nasa.gov/gallery/all/1/p/3540/1P442453196EFFCAEFP2594L2M1.JPG</a>