Geography of Mars Aurorae Sinus. The largest dark feature seen from Earth is Syrtis Major Planum. The shield volcano, Olympus Mons ("Mount Olympus"), rises 22 km above the surrounding volcanic plains, and is the highest known mountain on any planet in the solar system. It is in a vast upland region called Tharsis, which contains several large volcanos. See list of mountains on Mars. The Tharsis region of Mars also has the solar system's largest canyon system, Valles Marineris or the "Mariner Valley", which is 4,000 km long and 7 km deep. Mars is also scarred by countless impact craters. The largest of
Mount Olympus (Tasmania) the first work acquired by the gallery of an Australian-born artist. Another of Piguenit's Olympus paintings is held by the National Library of Australia. Nothofagus gunnii was first collected by Ronald Campbell Gunn in 1847 from Olympus. It is "Australia's only cold climate winter-deciduous tree", is found mainly in areas above 800 metres with rainfall of more than 1800mm, and is one of the plants that indicates Gondwana. Mount Olympus (Tasmania) Mount Olympus is a mountain in the Cradle Mountain-Lake St Clair National Park in Tasmania, Australia. It is the 24th highest mountain in Tasmania at above sea level and