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Tall Boulder Rolls Down Martian Hill, Lands Upright
The track left by an oblong boulder as it tumbled down a slope on Mars runs from upper left to right center of this image. The boulder came to rest in an upright attitude at the downhill end of the track.
Credit: NASA/JPL-Caltech/Univ. of Arizona
A track about one-third of a mile (500 meters) long on Mars shows where an irregularly shaped boulder careened downhill to its current upright position, seen in a July 3, 2014, image from the High Resolution Imaging Science Experiment (HiRISE) camera aboard NASA's Mars Reconnaissance Orbiter.
From Jet Propulsion Laboratory/NASA
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