Weepy Crater
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Weepy Crater

August 20, 2013
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows gullies—all of which head at the same level—on a south mid-latitude crater wall. At the 6 meters (~20 feet) per pixel scale at which this image was obtained, the gullies almost appear as if they are the product of a "weeping layer," a porous layer of rock through which a liquid such as water may have percolated until it came to the martian surface at this crater wall, then flowed downslope, toward the crater floor. MGS MOC Release No. MOC2-1552, 12 August 2006

Credits: NASA/JPL/Malin Space Science Systems

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