Ah yeah, very nice!
You often have so nice WM-generated terrains

(or maybe GC, anyhow, nice terrains;))
I really like the scales here.
The color-scheme is not often seen, but I think it works very nice here.
You might try to spend some time investigating the intersect underlying feature (displacement intersection) to get a bit more realistic fake grass surface which creeps a little bit up on the rocks. Now on some parts you see small patches, which you can "connect" and make slightly smoother with displacement intersection. The smoothness is directly controllable by the way, in case you really don't want this.
The tree-colors and scales are just spot on

Nice atmo and water as well. A slightly lower sun elevation might give some more drama to the image, nonetheless the lighting is good anyway.
Great work Eoin!
Martin