Mars this, there are far fewer craters on Mars compared with the Moon, because the atmosphere of Mars provides protection against small meteors and surface modifying processes have erased some craters. Martian craters can have a morphology that suggests the ground became wet after the meteor impacted. The shield volcano Olympus Mons ("Mount Olympus") is an extinct volcano in the vast upland region Tharsis, which contains several other large volcanoes. Olympus Mons is roughly three times the height of Mount Everest, which in comparison stands at just over . It is either the tallest or second-tallest mountain in the Solar System,
Olympus Mountain Running The medical care is provided by rescue services. The fastest runners finishes the race in about four hours. Around 1970, inspired by mountain running in the Alps, the first thoughts of a marathon in Olympus came on. Younger members of the Mountaineering Association E.O.S. Thessaloniki implemented the idea; a running track was selected, the paths were cleaned and marked. The first run took place on July 6, 1986. Around 100 Greek runners participated; although starting numbers have been assigned, there are no statistics on the results of this first Olympus Marathon. The new sport was called "Mountaineer Marathon", not only