Illustration for a children's fantasy storybook, about two kids who discover an underground world filled with magical things. This is the scene where thy go through an underground mushroom forest. The mushrooms have a strong bioluminescence, which allows other plants to grow in their light too, sort of an Avatar/Alice In Wonderland mix if you wish.
On the hill in the background is the tomcat's house, a character whose help the kids seek.

Tech info:
> Lightwave 3D: initial perspective compositing, grass rendering
> Illustrator: mushrooms, further compositing
> Photoshop: characters, additional painting, final compositing