Mount Duergar

The Dwarve's Cave is a place in final Fantasy. It is where the Dwarves reside. It is here the party uses the Nitro Powder to blow up the land mass and create a trench allowing them to get to Melmond and the Cavern of Earth. It is also here that the party takes the Adamantium found in the Floating Castle so the Smith can create Excalibur, the second most powerful sword in the game (only in the NES version).