Deuteronilus Mensae (Mars)

From albedo feature at 35N, 355W.

Deuteronilus Mensae is a region on Mars 937 km across and centered. It covers 344° -325° West and 40°-48° North. Deuteronilus region lies just to the north of Arabia Terra and is included in the Ismenius Lacus quadrangle. It is along the dichotomy boundary, that is. (wikipedia entry)

A mensa is a flat-topped prominence with cliff-like edges, i.e. a mesa. On Mars they are named after the nearest named albedo feature on the Schiaparelli or Antoniadi maps.