Arsia Mons(redirected from Arsia)
Arsia Mons(ar -see-ă) A 14-km-high 400-km-wide volcano at the southern edge of the Tharsis Ridge of Mars. It is located just south of the Martian equator at the aerographic coordinates 8.4° S latitude, 121.1° longitude (see areography). It appears to be older than the other Tharsis volcanoes and has the largest summit caldera, 140 km across. See Mars, volcanoes.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006