21 Aug, 2019
By, Wikipedia
Arnus Vallis
Arnus Vallis is an ancient river valley in the Syrtis Major quadrangle of Mars, located at 14.1° north latitude and 289.5° west longitude. It is 280 km long and was named after the classical and present day Arno River in Tuscany, Italy (previously named Arena Rupes).
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Arnus Vallis layers, as seen by HiRISE.
References
- ^ "Planetary Names: Welcome". Planetarynames.wr.usgs.gov. Retrieved 2022-03-20.