Region: Castalia. Dungeon. Level 18. The Dione Fort can be found in Castalia. Take a Carriage from East Amalthea Posthouse to Eochaid Posthouse, then head to the left to find the Dione Fort.
Ore Info: Smithing Stone, Windstone, Thunderstone
Smithing Stone, Thunderstone, Windstone
Hexlock Shield, Flying Manual, Concoction, Dual Fish Knives
Also on: Cai's path, Dietrich's path, Leda's path, Part III