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Giant Gullies in the Hellas Montes
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Giant Gullies in the Hellas Montes

January 31, 2011
This image shows portions of what could be called "giant gullies."

Actually, most of the Martian features called "gullies" would be called "ravines" on Earth, given their size. The depositional fans have been covered or heavily modified by glacial flows.

Written by: Alfred McEwen


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