A better known feature is a shield volcano 27 kilometers high, whose lava residues were explored by the Express orbiter in 2004 and is the tallest known mountain in the solar system.
Recent data suggests that this body has experienced five volcanic events, occurring between 3.5 billion and 100 million years ago. One such eruption likely occurred from the Arsia Mons, a member of the Tharsis Montes which was named by Giovanni Schiaparelli. A better known feature is a shield volcano 27 kilometers high, whose lava residues were explored by the Express orbiter in 2004 and is the tallest known mountain in the solar system. For 10 points, name this home to Olympus Mons orbited by Phobos and Deimos, the fourth planet from the Sun.
Recent data suggests that this body has experienced five volcanic events, occurring between 3.5 billion and 100 million years ago.
{Mars}