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January 16, 2009
This stereo view shows fractured mounds on the southern edge of Elysium Planitia on Mars. The mounds on the southern edge of Elysium Planitia are typically a few kilometers or miles in diameter and about 60 meters (200 feet) tall.Fractures that crisscross their surfaces are extensional in nature, suggesting that the mounds formed by being pushed up from below.
NASA archives
The entire area is covered by a relatively thin layer of dust and sand.
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