Trees are simple again. Maybe these trees are not trees, maybe roots. I created only one tree and deformed it into many trees. On some trees I used simple subdiv, on others I used fractal subdiv to make roughness.

As you can see, the original tree is plain. (To make plain trees is a very simple work.) I twisted, bended these plain trees to the shape of the walls, rocks as I needed.
With the rocks, trees, lights and shadows now I have the composition of the picture. Now I can work on the details.

Utilizing "kaleidoscope modeling" I created some ornaments. These pictures show the details of the patterns.

Finally I created stone pots, bowls, stone blocks, a carpet, and a man. The man is not a good model, I didn't want to show it in details. You are lucky that you can't see him face to face. ;-)