Here are a new render example in B3D Cycles 2.79.
Same scene with different light setups. We used for this
scene 12 different tree setups. Environment created in World Machine 3.
Here we created 6 different height Maps (Mountains).
Environment lighting with A.L.L. (Alpha Level).
Fog/Clouds are made with the same technis like in the Tutorial
by Andrew Price (Make a Grassy Meadow in Blender) especially
the Mist. Same technic we create the fog/clouds
Link : https://www.youtube.com/watch?v=zhYtJ_VmvXE
JLE Studios Auckland /Thomas