The True Detective serial inspired me to draw this picture. I just want to give some explanations with it. First of all it symbolizes the human and his comparison with a tree. All of them have two sides, the one that is always shown and the other is hidden.
As well as the personality of Rustin “Rust” Cohle was fighting with two sides of his life.
So the green zone symbolizes reality and the red one for unreal world.