"Olympus Mons" Latin for Mount Olympus is a volcanic mountain on planet Mars. It is almost 22km high. It is one of the tallest mountains in the solar system and three times taller than Mount Everest. The volcano is located in Mars' western hemisphere, having a diameter of about 15.6km.
Apart this planet Mars "The Red Planet" seems red because its soil is rich in iron oxide. There are two theories an old foolish one and a rational one, regarding this redness of the planet Mars.