The Adamant Isle Grotto (アダマンとうのどうくつ, Adamanto no Doukutsu?), also known as Adamant Grotto and Adamant, is a location in Final Fantasy IV and Final Fantasy IV: The After Years. In Final Fantasy IV, it can only be reached using the Hovercraft after landing near Mythril. A family of Small People live there, and the father collects tails.
If Cecil brings him a Rat Tail, he will give Cecil the Adamantite ore, which can be taken to Kokkol's house with the Mythgraven Blade and he can refine Excalibur out of it. After bringing him the Pink Tail won from rare enemies known as Flan Princesses, he will give the Adamant Armor.
- Red Tail - won from Red Dragon; trade for Onion Sword.
- Green Tail - won from Green Dragon; trade for Onion Helm.
- Blue Tail - won from Thunder Dragon; trade for Onion Shield.
- Black Tail - won from Armored Fiend; trade for Onion Armor.
- Yellow Tail - won from Yellow Dragon; trade for Onion Gauntlets.
In Final Fantasy IV: The After Years, the cave appears connected by land to Mythril, and is the first dungeon of the game.
Final Fantasy IV: The After YearsEdit
17 years after the events of Final Fantasy IV, the cave appears connected by land to Mythril and is much larger, no longer being home to the tail collectors. Biggs and Wedge accompany Ceodore here, and Ceodore must brave the trials of the cave alone to claim his proof of knighthood.
- Potion x2
- Ether x2
- Phoenix Down x2
- Tent x3
- Bomb Fragment
- Eye Drops
- Bronze Hourglass
- Antarctic Wind
- Echo Herbs
- Iron Gloves
- Sand Worm (Boss)
The background music that plays inside the Adamant Isle Grotto is Final Fantasy IV's "Dungeon" theme.