My finalized entry into DeviantArt's "Create a Colossus" contest. I'm reasonably pleased with the results of my hard work. The background was initially going to have a jungle motif, but I ultimately settled on a desert environment which better contrasts the colossus, and makes visible the vines springing up at its feet.
The Arbordaunt has thick armor of tangled roots, and writhing vines as its muscle. A small, thick forest adorns its back, and it's many eyes give it an unrestricted field of view. EDIT 6/20/11:
I've drafted a more detailed study of the Arbordaunt's head. It can be found here: [link]
Arbordaunt / artwork (c) Me