{{Short description|Vallis on Mars}} {{Infobox feature on celestial object |name = Asopus Vallis |image = [[Image:Asopus Vallis.JPG|200px]] |caption = Asopus Vallis, as seen by [[HiRISE]]. |coordinates = {{coord|4.4|S|149.7|W|globe:mars_type:landmark|display=inline,title}} |naming = a classical name for the modern Hagios River, Greece }} '''Asopus Vallis''' is a valley in the [[Memnonia quadrangle]] on Mars, located at 4.4° south latitude and 149.7° west longitude. It is 33&nbsp;km long and was named after a classical name for the modern [[Asopus#The rivers in Greece|Boeotian Asopus]] river in Greece.<ref>{{cite web|url=http://planetarynames.wr.usgs.gov |title=Planetary Names: Welcome |publisher=Planetarynames.wr.usgs.gov |access-date=2014-01-06}}</ref>

==References== {{reflist}} {{Geography of Mars}} {{Portal bar|Solar System}}

[[Category:Valleys and canyons on Mars]] [[Category:Memnonia quadrangle]]

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