A large sandsheet with surface dune forms is shown in today's image of Aonia Terra.

A large sandsheet with surface dune forms is shown in today's image of Aonia Terra.
SuperStock offers millions of photos, videos, and stock assets to creatives around the world. This image of A large sandsheet with surface dune forms is shown in today's image of Aonia Terra. by World History Archive/Image Asset Management is available for licensing today.

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Kepler's Rim
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This image from NASA's Mars Reconnaissance Orbiter spacecraft contains interesting examples of crosscutting, sinuous and straight ridges. Both ridges may be ancient river deposits.
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Images of the Cydonia region of Mars continue to be popular among visitors to the Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC)web site. The two pictures (one annotated, the other not) are mosaics of two images from MGS MOC and one from the Mars Odyssey Thermal Emission Imaging System visible camera (THEMIS VIS). The mosaics highlight a Cydonia landform popularly known as the D&M Pyramid. It is located near 40.7°N, 9.6°W. Although it is not really shaped like a pyramid, the Cydonia landform is one of thousands of massifs, buttes, mesas, knobs, and blocks that mark the transition from the far northwestern Arabia Terra cratered highlands down to the northeastern Acidalia Planitia lowlands. Each block, whether shaped like a face, a pyramid, or simply a mesa, massif, or knob, is a remnant of the bedrock of northeastern Arabia that was left behind as erosion slowly degraded the terrain along this zone between the highlands and the lowlands. A few outcroppings of layers in this ancien
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Ancient Paleo-Dunes Battered by Impact Craters
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DETAILS
Image Number: 1746-19671147Rights ManagedCredit Line:World History Archive/Image Asset Management/SuperStockCollection:Image Asset ManagementStory:Martian Geological FeaturesContributor:World History ArchiveModel Release:NoProperty Release:NoResolution:2097×8333
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