Ilex Forest

The forest that could be called mysteries itself. Most of it have been explored, and researcher says that there aren't much more to the forest than they already know. Yet while being there it's like there IS more to the forest, that nobody ever will know. The trees stands so close, that light much light doesn't come through.
A shrine is also placed deep in the forest, a small figure of a Pokemon is placed inside it, but it's impossible to tell what Pokemon it is and nobody know nor remember what the shrine is good for.