100% procedural terrain and texture.
Main shape consists of 3 fractals, each of different size. There are also two layers of snow, basic colour and a slight gray-blue tint on some heavy slopes together with reflectivity (not much visible thought).
I especially like northern parts of the image with almost transparent cumulus. I have a feeling that it works well in this kind of scenes. I'll have to use such nearly transparent cumulus in different renders to see the effect. It kinda mimics the aerial perspective in not so uniform way as the atmosphere depth does.
Postwork - Slight level adjustment, framing and a soft-glow effect.
Render info:
Original size: 3600 x 2400 px
Q: 0.833
AA: 5 (Mitchell-Netravali)
GI: 1/3 SS=on
Render time = 8 hours
Link to the picture -->
http://porcupinefloyd.deviantart.com/art/Frozen-Wasteland-108058270
