Terra Cimmeria (Mars)

This feature is named after an earlier feature.

Terra Cimmeria is a large Martian region, centered at 34.7°S 145°E / -34.7; 145 and covering 5,400 km at its broadest extent. Terra Cimmeria is one part of the heavily cratered, southern highland region of the planet. The Spirit rover landed near the area. (wikipedia entry)

A terra is an extensive land mass. On Mars they are named after the nearest named albedo feature on the Schiaparelli or Antoniadi maps.