I really don't do many images without a sky, so I figured I'd do a test with luminous textures. Its nothing fancy, but was fun.
The hot rock areas were done using 2 power fractals, each connected to its own default shader and then plugged into a surface layer.
The first hot rock layer was added with less luminosity, and more slope and altitude tolerance, and fuzzy zones. I layed a brighter version of the same with more luminosity, and less altitude and slope tolerance. This way, the glowing rock fades out like real rock does. I could have used only one layer, but this gave a bit more control.
I have a steam cloud layer added, but since I panned the camera down, you cannot see much of it.
I did some contrast work in Photoshop to bring out more detail, as the scene was a bit on the dark side - just like Vader.
