Land of Darkness...

Caption NASA originale:"The narrow and twisted F-Ring lights up this scene, which features Mimas against the unlit side of Saturn's Ring-Plane.
The F-Ring contains a great deal of fine, icy particles that are quite effective at scattering Sunlight at "high phase" angles.
Mimas (about 397 Km - approx. 247 miles - across) is seen as a mere crescent in the center of this haunting view.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on June 13, 2006 at a distance of approx. 3,9 MKM (such as about 2,4 MMs) from Mimas and at a Sun-Mimas-spacecraft, or phase, angle of 156°. Image scale is roughly 23 Km (about 15 miles) per pixel".