Castle Zvahl Baileys is a dungeon area in Final Fantasy XI. The dark, twisting towers of Castle Zvahl stands atop the frozen, western peak of Xarcabard. Adventurers must traverse the Castle Zvahl Baileys upon entering the dark fortress, which was the headquarters of the Shadow Lord and his beastman army during the Crystal War. Many adventurers have lost themselves in the dark, twisting corridors of Castle Zvahl Baileys. Those who are lucky enough to survive Castle Zvahl Baileys will find themselves in the Castle Zvahl Keep.