Arborea, meaning 'land of
trees', is the
plane of
Chaotic Good in the
AD&D Planescape setting. Of all the
Outer Planes, it is the most
emotional and
passionate. It has three layers:
Olympus/
Arvandor: These names, actually of the homes of the
Greek and
Elvish pantheons, have been used as names for the whole plane. This layer has a
Mediterranean climate and is very beautiful.
Ossa/
Aquallor: This layer is the home of
Poseidon, and of his elvish counterpart,
Deep Sashelas.
Pelion/
Mithardir: This layer is a desert, nearly empty. The elvish name means 'white dust'.
The human names of these layers are the names of three great
mountains in Greek
mythology.