Ulthea.
In reply to Princess Athelisa (msg # 1):
Bellara, the subject kingdom of Ulthea, lies to the southeast, and is also very prosperous. As for Maledon, Ulthea's neighbor, it is something of a wild country, said to be inhabited by witches and sprites and who knows what else.
Between the kingdoms, there lies a tree, said to be the entrance to Valhorn, the Underworld, and said to be inhabited by three women called the seers, Saara, Rydia, and Brianel.