Wood and rocks ¬_¬;
I like this concept as it reinforces the idea that the character that lives here is alone. The house which is built on the small incline of a river is not only safer than a normal home (wildlife and enemies) it is there to keep normal people away as it is difficult to access. The character likes solitude.
The composition of this concept is horrific; but its a concept not an illustration so I'm not too put off by it.
About 8 hours in total i think. Photoshop and Silo 2
Again after 47ness's feedback i've tweaked a few things, added mould, water is calmer etc. Thanks again 47.