The South Polar Region of Rhea

Caption NASA:"The Cassini Spacecraft surveys the South Polar Region of icy Rhea.
Cassini flybys have shown that Rhea is not differentiated, or separated into distinct layers; instead, it appears to be a mixture of approx. 75% ices and 25% rock and metal. Saturn's second-largest moon, Rhea, is about 1528 Km (approx. 949 miles) wide.

The image was taken with the Cassini Spacecraft narrow-angle camera on April 12, 2008 using a spectral filter sensitive to wavelengths of ultraviolet light centered at 338 nanometers. The view was acquired at a distance of approx. 345.000 Km (such as about 214.000 miles) from Rhea and at a Sun-Rhea-Spacecraft, or Phase, angle of 73°.
Image scale is roughly 2 Km (a little more than 1 mile) per pixel".