Description
A drift dubbed "Serpent" stretches in front of NASA's Mars Exploration Rover Spirit in this picture from the left eye of Spirit's front hazard-avoidance camera. Spirit took the image during its 71st martian day, or sol, on Mars (March 15, 2004) while exploring the rim of the crater nicknamed "Bonneville." The following sol, the rover used its wheels to dig into the drift and expose material under the surface.
