HiRISE: The White Cliffs of ‘Rover’

ESP_050282_1820This image reminds us of the rugged and open terrain of a stark shore-line, perhaps of an island nation, such as the British Isles. A close-up in enhanced color produces a striking effect, giving the impression of a cloud-covered cliff edge with foamy waves crashing against it.

The reality is that the surface of Mars is much dryer than our imaginations might want to suggest. This is only a tiny part of a much larger structure; an inverted crater—a crater that has been infilled by material that is more resistant to erosion than the rocks around it—surrounded by bluish basaltic dunes. The edge of these elevated light-toned deposits are degraded, irregular and cliff-forming.

Dunes visible below the cliff, give the impression of an ocean surface, complete with foam capped waves crashing against the “shore line,” demonstrating the abstract similarity between the nature of a turbulent ocean and a Martian dune field…. [More at link]

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