description of the largest volcano on mars
Explanation: The largest volcano in the Solar System is on Mars. Olympus Mons rises 24 kilometers high and measures 550 km across. By comparison, Earth' s largest volcano, Mauna Loa in Hawaii, rises 9 km high and measures 120 km across.Such large volcanoes can exist on Mars because of the low gravity and lack of surface tectonic motion.Olympus Mons is a shield volcano, built by fluid lava.y comparison, Earth' s largest volcano, Mauna Loa in Hawaii, rises 9 km high and measures 120 km across. Such large volcanoes can exist on Mars because of the low gravity and lack of surface tectonic motion. Olympus Mons is a shield volcano, built by fluid lava.