Oetrago is divided into two parts; the glaciers on its outskirts, and the forests on its three islands. There is not much to say about the glaciers, except that they're cold. But there is something to say about the islands.
The main island had a small forest in the middle of its grasslands, and the other two were once all woodland. The developing megalopolises have since spread across most of the surface and erased much of the wilderness.