Here are more examples of spacecraft pictures of these small, icy worlds, along with a few paintings of what it might be like on their surfaces. In some cases the surfaces are darkened by fine dust, probably from an impacting body.

Tethys, to the left, from Cassini-Huygens http://photojournal.jpl.nasa.gov/catalog/PIA09017 and from Cassinmi Orbiter (to right) via APOD http://antwrp.gsfc.nasa.gov/apod/ap051012.html

On the surface of Tethys, from D. Seal http://samadhi.jpl.nasa.gov/art/surfaces.html

View from a moon of Saturn   (painting by William Hartmann)

A moon gallery: (click on the pictures to see a painting of what their surfaces might look like)

And strangest of all, the surface of Hyperion (from Cassini Imaging Team via. APOD: http://antwrp.gsfc.nasa.gov/apod/ap051003.html