The nitrogen-ice plain Sputnik Planitia and surrounding terrain feature in this geological map. All of the terrain in this map has been imaged at a resolution of approximately 1,050 feet (320 m) per pixel or better. The blue and green that fill the center of the map represent different textures, from cellular terrain in the center and north to smooth, pitted plains in the south. The black lines represent the troughs that are the boundaries of cellular regions in the ice. Purple represents the mountain ranges that line Sputnik’s western border, and pink represents the scattered hills at its eastern edge. The possible cryovolcano Wright Mons appears in red in the southern corner of the map. Rugged highlands are dark brown along the western edge and contain many large impact craters, mapped in yellow.