Triple stacked inverted terrain from the Landscapes under Fantastic Skies set with materials from the Hi-Res Terrain sets 1 and 2. The sky and ambient light from the HDRI Enhanced Skies set, the key light by the sun. The sun rays are another cone with Frozencry's Streaming Rays material (available here). A cone garden -- a whim of nature.
These terrains Horo, they're killing me. Again, you've created a very detailed and convincing model. As expected, you've lit the scene perfectly as well. Nothing I could look for and ask to see improved. Far beyond my abilities. You have a strong knack for creating stunning terrains. Bravo!