The Elysium quadrangle is one of a series of 30 quadrangle maps of Mars used by the United States Geological Survey (USGS) Astrogeology Research Program. The Elysium quadrangle is also referred to as MC-15 (Mars Chart-15).
The Elysium quadrangle covers the area 180° to 225° west longitude and 0° to 30° north latitude on Mars. It contains major volcanoes named Elysium Mons and Albor Tholus and river valleys--one of which, Athabasca Valles may be one of the youngest on Mars. On the east side is an elongated depression called Orcus Patera.
Read more about Elysium Quadrangle: Volcanoes, Layers, Fossa/pit Craters, Methane, Craters, Vallis in The Elysium Quadrangle, Gallery