NASA probe explores 'Martian Monument Valley' NASA/JPL/MSSS PHOTO RELEASE Posted: June 10, 2000 This recent Mars Global Surveyor Mars Orbiter Camera image shows mesas and smaller buttes that occur on the Elysium Plains, approximately 185 miles south of the Cerberus region in the Martian eastern hemisphere. Like the world-famous Monument Valley located in the Navajo Nation on the border of Arizona and Utah, this "Martian Monument Valley" consists of a series of mesas and buttes that have formed by erosion of layered bedrock. The uneroded rock forms a flat upland at the top of the image. The number of mesas and buttes decreases toward the bottom of the image, but their presence indicates that the rock in which they formed was once more extensive and covered the entire scene. Small dunes form parallel ridges on the lowland between many of the mesas near the top of the image. The image covers an area that is 3 kilometers (1.9 miles) wide and is illuminated from left.
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