This image, taken by the panoramic camera on NASA's Mars Exploration
Rover Spirit during the rover's trek through the "Columbia Hills" at
"Gusev Crater," shows the horizontally layered rock dubbed "Tetl."
Scientists hope to investigate this rock in more detail, aiming to
determine whether the rock's layering is volcanic or sedimentary in
origin. If for some reason this particular rock is not favorably
positioned for grinding and examination by the toolbox of instruments
on the rover's robotic arm, Spirit will be within short reach of
another similar rock, dubbed "Coba." Spirit took this image on its
264th martian day, or sol (Sept. 29, 2004). This is a false-color
composite image generated from the panoramic camera's 750-, 530-, and 430-nanometer filters.
Image Credit: NASA/JPL/Cornell
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