Driving By This image was taken on sol 154 by NASA's Mars Exploration Rover Spirit's front hazard avoidance camera. The Columbia Hills can be seen against the horizon. Directly in front of the rover is the highest of the hills, "Husband Hill," which is approximately 90 meters tall. The rock in the foreground is larger than other surrounding rocks, approximately 35 centimeters across, but was not an observation target for Spirit. The tread marks in front of the rock are not a trench, but simply evidence that the rover passed by as she continues her journey toward the Columbia Hills. Credit: NASA/JPL Sol 154 Caption written by Stephenie Lievense with input from Jim Rice sol-154/Front_Hazcam/2F140036281FFL65DWP1201L0M1
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