My mind? I think on the surface, when you first enter, it'll look quite peaceful and calm, like a meadown in he middle of a forest, with a river and a small waterfall. Then, you'll start to notice odd little things. Small rock pools draining and leaving the fish inside to die. Caves in the cliff face that are straight lines inside but still somehow exit into each other. All sorts of weird MC Escher style stuff but at a very base level, barely noticeable. Then as you look even closer things will get even more bizarre. The river will start becoming more pink, then darker and more crimson, and the leaves on the trees will start to die. The longer you spend inside my mind the darker the sky gets and the more twisted everything becomes. The animals that lived in the forest start to become more deformed, missing limbs and with blood weeping from their eyes and bones sticking out of their torsos. And you'll slowly be driven insane by the atmosphere of the place, as you realise that you've entered a place from which you cannot escape...