Comment by Gibbon

Photos from Viking Lander 1 and 2, 1976-1977

http://nssdc.gsfc.nasa.gov/image/planetary/mars/vikinglander...

http://www.wired.com/images_blogs/wiredscience/2012/07/vikin...

http://mars.spherix.com/spie2003/SPIE_2003_Paper_GVL_files/i...

http://upload.wikimedia.org/wikipedia/commons/3/37/Mars_Viki...

http://upload.wikimedia.org/wikipedia/commons/2/2a/First_Col...

http://upload.wikimedia.org/wikipedia/commons/1/1b/Mars_Viki...