Arsia Mons /ˈɑːrsiə ˈmɒnz/ is the southernmost of three volcanoes (collectively known as TharsisTharsisTharsis (/ˈθɑːrsɪs/) is a vast volcanic plateau centered near the equator in the western hemisphere of Mars. The region is home to the largest volcanoes in the Solar System, including the three enormous shield volcanoes Arsia Mons, Pavonis Mons, and Ascraeus Mons, which are collectively known as the Tharsis Montes.
› wiki › TharsisTharsis - Wikipedia Montes) on the Tharsis bulge near the equator of the planet Mars. To its north is Pavonis Mons, and north of that is Ascraeus Mons. The tallest volcano in the Solar System, Olympus Mons, is to its northwest.