Medusa Fossae a large geological region of uncertain origin on the planet Mars. It is named for the Medusa of Greek mythology. "Fossae" is Latin for "trench". Located roughly at 5° S 213° E (http://kvaleberg.com/extensions/mapsources/index.php?params=5_S_213_E_), it straddles the highland - lowland boundary near the Tharsis and Elysium volcanic areas. Mars, with polar ice caps visible. ... A relatively modern image of Medusa painted by Arnold Böcklin In Greek mythology, Medusa (Μεδουσα Queen), was a monstrous female character whose gaze could turn people to stone. ... Categories: Stub | Mars ...