Approximately natural color mosaic of Iapetus taken on December 31, 2004. The view is dominated by the dark Cassini Regio. Brighter terrain is visible high on Iapetus' northern latitudes. Hints of much brighter terrain can also be seen at the limb at approx. 7 o'clock position where slight camera saturation occured. Two huge and ancient impact basins are visible as well as a mysterious mountain range running precisely along the equator. North pole is approximately at 1 o'clock position and is in darkness here. Credit: NASA / JPL / SSI / Gordan Ugarkovic