Castle of Fyrien

"The Castle of Fyrien. I'm sure of it."

- Arthur to Gwen and Merlin

The Castle of Fyrien is an abandoned castle in the kingdom of Camelot. It backs onto the Great Seas of Meredor and is located above a labyrinth of secret tunnels.

History
The castle was built by a merchant called Fyrien, who used it as an outpost for trade routes to the east. In order to avoid Camelot's levies, Fyrien dug a labyrinth of secret tunnels from the castle to the sea to smuggle goods into the kingdom without anyone knowing.

When war broke out between Camelot and Caerleon, trade dried up and Fyrien abandoned the castle. Caerleon later fled to the castle after he was defeated in the Battle of Denaria, but Camelot's troops used the tunnels to ambush him.

Morgause and Cenred used the castle as a hideout when they kidnapped Gwen and Elyan to lure Arthur into a trap (The Castle of Fyrien).

Trivia

 * According to Arthur, the Castle of Fyrien was built to withstand anything (The Castle of Fyrien).