Alluvial Fans in Saheki Crater, Mars

Hello guys, We're here with some new information from NASA :
Alluvial fans are gently-sloping wedges of sediments deposited by flowing water. Some of the best-preserved alluvial fans on Mars are in Saheki Crater, an area that has been imaged many times previously.

from NASA http://ift.tt/1UKgLwX
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