First impression, the soil look "clumpier". But, looking at Viking lander footpads, maybe it is just an artifact of the landing rocket blast. - Kurt MPE http://www.nasa.gov/mission_pages/phoenix/images/press/false_color_postcard_... http://www.nasa.gov/mission_pages/phoenix/images/press/9271_cutout.html Viking lander shot http://photojournal.jpl.nasa.gov/jpeg/PIA03164.jpg Pathfinder soil shot s http://mars.jpl.nasa.gov/MPF/imp/sol/sol1/80816_full.jpg http://mars.jpl.nasa.gov/MPF/imp/sol/sol3/81000_full.jpg Spirit soil shots http://www.nasa.gov/mission_pages/mer/images/mer-20060710.html http://www.nasa.gov/mission_pages/mer/images/pia08094.html Opportunity soil shot http://www.nasa.gov/mission_pages/mer/images/pia08807.html