Utopia planitia is a place in_________.?

Utopia Planitia is the largest recognized impact basin on Mars with an estimated diameter of 3300 km,[1] and is the Martian region where the Viking 2 lander touched down and began exploring on September 3, 1976. It is located at the antipode of Argyre Planitia, centered at 49°42′N 118°00′E / 49.7°N 118.0°E / 49.7; 118.0. It is in the Casius quadrangle and the Cebrenia quadrangle of Mars.