Wikipedia
Archenland
In C. S. Lewis's fantasy novels the Chronicles of Narnia, The Kingdom of Archenland is a nation to the south of the Kingdom of Narnia, and to the north of both nations' occasional (and final) enemy, the Calormen Empire. Its borders are formed by mountains to the north and by the River Winding Arrow to the south. Its capital appears to be the castle located below the Anvard pass, which allows passage to Narnia.