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Mount Duergar, also known as the Dwarves' Cave, is a location in the original Final Fantasy. It is here where the Dwarves reside. Mount Duergar is located at the western edge of the Aldean Sea.


The Warriors of Light use the Nitro Powder obtained in Castle Cornelia here in order to blow up the land bridge, creating a trench, allowing them to get to Melmond and the Cavern of Earth.

Later, they return here to hand the Adamantite found in the Flying Fortress to Smyth, so that he can create the legendary sword Excalibur.


Destroying the land bridge[]

The party needs to use the Nitro Powder obtained in Castle Cornelia to destroy the land bridge, allowing them to reach the outside world.

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The Excalibur item can only be earned by visiting Smyth and giving the Adamantite item. The Adamantite item is found in the Flying Fortress.


Item Location
Wyrmkiller Southern Room (Requires Mystic Key)
Tent Southern Room (Requires Mystic Key)
Great Helm Southern Room (Requires Mystic Key)
Ether Southern Room (Requires Mystic Key)
Cottage Southern Room (Requires Mystic Key)
Mythril Mail Southern Room (Requires Mystic Key)
Potion Southern Room (Requires Mystic Key)
575 gil Southern Room (Requires Mystic Key)
Excalibur Received from Smyth (Requires Adamantite)

Other appearances[]

Final Fantasy XIV[]

The Duergar Mountains appear in the Shadowbringers expansion as a zone in Kholusia, near the Komra village. The mountains serve as the scenario of the YoRHa: Dark Apocalypse storyline, being destroyed by the white androids revealing the Puppets' Bunker in their depths.

Musical themes[]

The Background Theme that plays inside Mount Duergar is called "Matoya's Cave".



"Duergar" is the name used for a sub-race of dwarves in Dungeons & Dragons, acting as an evil species of dwarf in the same manner as drow to elves.