Here is a map of the Great Isle with all six countries labeled.
In book one, Song of the Storm Eagles, a small portion of the story takes place in the northern part of Llodyn. Most of the story takes place in Yensenti.
In book two, The Traitor's Song, the story takes place in Yensenti--mostly--except for a brief time when several of the characters travel into the future and find themselves in an undisclosed location.
There is still much of the Great Isle to explore and many stories to be told.