Hadriacus Mons by a contact between magma and groundwater. "Hadriaca Patera", a term formerly used for the entire edifice, is now only used for the central caldera, which is in diameter. Hadriacus Mons Hadriacus Mons is an ancient, low-relief volcanic mountain on the planet Mars, located in the southern hemisphere just northeast of the impact basin Hellas and southwest of the similar volcano Tyrrhenus Mons. Hadriacus Mons is in the Hellas quadrangle. It has a diameter of . The name was approved in 2007. The flanks of Hadriacus Mons have been eroded into gullies; its southern slopes are incised by the outflow
Mount Olympus Mount Olympus Mount Olympus (; "Olympos", for Modern Greek also transliterated "Olimbos", or ) is the highest mountain in Greece. It is located in the Olympus Range on the border between Thessaly and Macedonia, between the regional units of Pieria and Larissa, about southwest from Thessaloniki. Mount Olympus has 52 peaks, deep gorges, and exceptional biodiversity. The highest peak, Mytikas (Μύτικας "Mýtikas"), meaning "nose", rises to . It is one of the highest peaks in Europe in terms of topographic prominence. Olympus is notable in Greek mythology as the home of the Greek gods, on Mytikas peak. Mount Olympus is