Eroding Terrain in Arabia Terra

This image, approximately 1.5 x 3 kilometers , shows a sample of eroded Martian terrain in Arabia Terra.

At one time this was a flat smooth terrain, but over time it has been eroded (most likely by the wind) forming depressed, low-lying areas where we see many small dunes. The dunes resemble waves in the ocean, whereas in other areas we see small flat-top hills forming.

Written by: Livio Tornabene, Eric Pilles, Ryan Hopkins and Kayle Hansen (audio: Tre Gibbs)   (17 December 2014)

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Image: NASA/JPL/University of Arizona