THEMIS: Yardangs in Memnonia Sulci

Yardangs in Memnonia Sulci (THEMIS_IOTD_20161024)THEMIS Image of the Day, October 24, 2016. The elongated hills in this VIS image are a feature termed yardangs. Yardangs are formed by wind activity in regions where the surface material is soft and not well cemented. The elongation indicates the direction of the wind. (Note that the lighting in the image comes from the right.)

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