Sand Dunes
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Dark dunes (probably basalt), in an intracrater dune field, Noachis. Picture from Mars Global Surveyor, under the MOC Public Targeting Program.
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Wide view of dunes in Noachis, as seen by HiRISE.
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Close-up View of dunes in previous image, as seen by HiRISE. Note how sand barely covers some boulders.
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Barchan sand dunes in the Hellespontus region, as seen by HiRISE. The horns point in the downwind direction.
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Proctor Crater ripples and dunes, as seen by HiRISE.
Read more about this topic: Noachis Quadrangle
Famous quotes containing the word sand:
“But the twelve lie in the sand by the dry rock
Seeing nothing—the sand, the tree, rocks
Without number—and turn away the face
To the mind’s briefer and more desert place.”
—Allen Tate (1899–1979)