Hi Zok
The groundwork is just a thin covering of paper mache over the wood base. Then Real Grass and Green Grass from Dioramaterials.
The rocks come from my back yard.
The trees I made from scratch (http://www.trevinocircle.com/sippin/)
and just some scatter under them to simulate fallen leaves.
I skimped a bit on the groundwork this time. Most of the effort went on that damn Dragon Tiger!
Thanks
Glen