{{Short description|Vallis on Mars}} {{Infobox feature on celestial object |name = Bahram Vallis |image = [[File:Bahram_Vallis_based_on_day_THEMIS.png|250px]] |caption = Bahram Vallis based on [[THEMIS]] day-time image |coordinates = {{coord|20.7|N|57.5|W|globe:mars_type:landmark|display=inline,title}} }} [[File:Lunae Palus map.JPG|thumb|Map of [[Lunae Palus quadrangle]] with labels. [[Kasei Valles]] is a very large ancient river valley.]] '''Bahram Vallis''' is an ancient river valley in the [[Lunae Palus quadrangle]] of [[Mars]] at 20.7° north latitude and 57.5° west longitude. It is about 302&nbsp;km long and was named after the word for 'Mars' in Persian.<ref>{{cite web |url=http://planetarynames.wr.usgs.gov |title=Gazetteer of Planetary Nomenclature |website=[[Astrogeology Research Program]] |publisher=[[United States Geological Survey]] |access-date=20 March 2022}}</ref> Bahram Vallis is located midway between [[Vedra Valles]] and lower [[Kasei Valles]]. It is basically a single trunk valley, with scalloped walls in some places. The presence of streamlined erosional features on its floor shows that fluid was involved with its formation.<ref>Baker, V. 1982. The Channels of Mars. University of Texas Press. Austin</ref>

<gallery class="center" widths="190px" heights="180px" > Image:Kasei Valles topolabled.JPG|Area around Northern Kasei Valles, showing relationships among [[Kasei Valles]], Bahram Vallis, [[Vedra Valles]], [[Maumee Valles]], and [[Maja Valles]]. Map location is in [[Lunae Palus quadrangle]] and includes parts of Lunae Planum and [[Chryse Planitia]].

Image:Bahram Vallis.JPG|Bahram Vallis, as seen by [[HiRISE]]. Rotational landslides (slumps) are visible at the base of north wall.

File:ESP 056904 2015valley.jpg|Close view of part of Bahram Vallis, as seen by HiRISE under HiWish program </gallery>

==References== {{reflist}}

==See also==

{{div col|colwidth=30em}} * [[Geology of Mars]] * [[HiRISE]] * [[Lunae Palus quadrangle]] * [[Outflow channels]] {{div col end}}

{{commons category|Bahram Vallis}} {{Geography of Mars}} {{Portal bar|Solar System}}

[[Category:Valleys and canyons on Mars]] [[Category:Lunae Palus quadrangle]]

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