Rock garden

Rock garden

. This image, taken from Mars Pathfinder, shows the rocks named “Shark” and “Half Dome” at upper left and middle, respectively. The rocks in this area are inclined and stacked, as if deposited by rapidly flowing water. The smooth, angular rocks are relatively dust free and apparently uncontaminated, allowing unambiguous measurements of their chemical constituents by the Sojourner Rover. (Courtesy of NASA and JPL.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University