This terrain was generated with glaciation lowered and canyonization raised, using the ridged Perlin method. The only after-processing done to this image was to remove a little blue from the overall colour balance and to raise the contrast slightly so that the presence of other canyons behind this one was more obvious.

The next picture in the gallery is from the same terrain, from a viewpoint just above the water level looking up at the point where the cliff bulges slightly to the right of centre in this picture.