Some context - this is based on the dales and wild places of the peak district where I live. The scales are small the waterfall perhaps 40ft high, the cliffs around a hundred at their highest. These falls appear after heavy rain( normally they are just damp stripes) and are loaded with peat, hence the brown colour.
This is not quite finished there are some errors in the positioning of the foam(due to the vector displacement shader) and I want to add some special grasses I will have to model myself.
Thanks to Dune for the heather and Walli for the grasses.