Mad Vallis

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Mad Vallis
Mad Vallis.JPG
Mad Vallis, as seen by HiRISE. Picture on right is an enlargement of part of the other picture.
Coordinates56°30′S 283°54′W / 56.5°S 283.9°W / -56.5; -283.9Coordinates: 56°30′S 283°54′W / 56.5°S 283.9°W / -56.5; -283.9

Mad Vallis is a vallis (valley) in the Hellas quadrangle of Mars, with its location centered at 56.5° S and 283.9° W. It is 524 km long and was named after the Mad River in Vermont, USA.[1]


  1. ^ "Mad Vallis". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.