Olympus Mons Mars Artwork of Olympus Mons darker area top centre the largest known volcano in the Solar System It is found on Mars the fourth planet from the Sun Its summit rises kilometers km above the surrounding plains Mount Everest is km high and the base measures km across Shortly after sunrise Olympus Mons produces long shadows bottom centre To the left of the volcano is a region of ridges and hills known as the Lycus Sulci rough area far left The western margin of Lycus Sulci is next to a smoother lower elevation known as the Amazonis plains bottom left
