Last updated on April 21, 2014 at 8:55 EDT
Dunes and Dust Devils
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Dunes and Dust Devils

March 26, 2011
Craters trap wind-blown sand very effectively. In the Southern hemisphere we see fields of sand dunes on the floors of many craters.

Longitudinal dunes cross a portion of the floor of this un-named Southern hemisphere crater. Dust devil tracks that criss-cross the dunes remove a light layer of dust but do not disturb the ripples on the dunes. In the sub-image large boulders appear partially buried by the drifting sand.

Written by: Candy Hansen