Very nice. What am I looking at? You have some exposure issues to work out with this one, but I kinda like it. Reminds me of a fallen tree in the deep woods I often wander. It's called "Boar Rock" because it looks like a big pig with gaping jaws and droopy ears. (5)
Overexposure and lack of sharpness hurts the presentation of this otherwise interesting subject. A grad filter on the top of the frame would help tremendously, I think you needed to try to capture this at a time of day that gave better shdows on the intricate decaying roots. The perspective works well for the composition, but I think keeping this image in color would create a better contrast between the dead tree and the living backdrop. Obviously, it wouldn't meet the challenge then, but its something to think about.
Somehow this subject needed to be isolated more. Maybe shot from a different angle, other time or day, or with a much shallower dof. The blown-out highlights in the trees are a bit distracting, and the trunk of the tree sort of blends in to the rest of the photo and becomes a "busy" photo.