Columbia Boulders and Outcrop
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Columbia Boulders and Outcrop

December 20, 2004
This image from the panoramic camera on NASA's Mars Exploration Rover Spirit shows a hillside portion of the "Columbia Hills." Scientists are interested in investigating the large boulders and rock outcrop seen on the hillside, as they may reveal clues about how these hills formed. This image was taken approximately 0.4 kilometers (0.25 miles) away from the base of the hills on sol 146 (May 31, 2004).

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