I like the concept for a sculpture: A simple shape in the middle of a forest or on top of a mountain... ^^ It makes a contrast with the context. The subject doesn't detache that much from the background as if it was there for a lonng time. Even thought it is in the forest it looks futuristic.
It makes me think of the ''Garden of imagination'' in Terrasson in which there is a simple copper shape that guide visitors through the wood.
The forest is dam good by the way! I'm trying to get a good at representing vegetation, (since i'm a landscape architect to be) and yours is not monospecific and it feels great!