An arctic island look
was achieved by using white for low heights and brown for higher ones and
of course some noise.Much trickery has been used to create the volcanoe in the scene. For example, if you were to look at the mountain from the other side it would not look like a mountain at all. This approach was acceptable since the camera-moves in the animation were very limited.
The techniques used were those described by Ken Musgrave plus a little bit of hacking around. For example a combinations of fractal techniques are used for the volcanoe, a separate height field was used for the peaks surrounding the volcanoe.
An arctic island look
was achieved by using white for low heights and brown for higher ones and
of course some noise.
The rock was shaded using a strata shader.
This mountain also has a tendency to erupt every now and then. The eruption
is done using particle systems, the trick used here was to make each particle
a relatively large sphere and then use motion blurring on them so a somewhat
fuzzy effect is achieved.
The shader used for colouring the eruption takes the age of the particle as one of its parameters and gives a corresponding colour to the particle. The older the particles the darker they get. Young particles are bright red, some randomness is added to the age to please the eye.