What is Valles Marineris?
'''Valles Marineris''' is a [[canyon]] system on [[Mars]]. It is {{convert|4000|mi|abbr=off}} long.<ref>{{cite web|url=https://mars.jpl.nasa.gov/gallery/atlas/valles-marineris.html|title=Mars Exploration: Multimedia|website=mars.jpl.nasa.gov}}</ref> ==References== {{reflist}} {{Mars}} {{science-stub}} [[Category:Mars]] [[Category:Canyons]]