Terebinthia

Terebinthia is a sovereign island-kingdom in the Great Eastern Ocean, in the exterior of the Merepeople Nation, the closest island to it being the island of Galma, which is a duchy under the authority of the Kingdom of Narnia. During the voyages of Caspian X a sickness on the island prevented them from going ashore there. Its name origanates from the terebinth tree in the Bible.