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.

In the Nintendo DS version, powerful enemies such as the Red Dragon have a slim chance of dropping additional tails, which may be brought to the man at the Grotto for additional Onion equipment:

• 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.

StoryEdit

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.

TreasureEdit

Final Fantasy IVEdit

• Onion Sword
• Onion Shield
• Adamantite
• Adamant Armor
• Onion Helm
• Onion Armor
• Onion Gloves

Final Fantasy IV: The After YearsEdit

• Potion x2
• Ether x2
• Phoenix Down x2
• Tent x3
• Bomb Fragment
• Eye Drops
• Bronze Hourglass
• Antarctic Wind
• Echo Herbs
• Iron Gloves

Enemy formationsEdit

Final Fantasy IV: The After YearsEdit

B1FEdit

• Goblin x3
• Goblin x3, Sword Rat
• Goblin x4
• Larva x3

B2FEdit

• Goblin x2, Sword Rat x2
• Goblin x3, Sword Rat
• Goblin x4
• Larva x4

B3FEdit

• Eyewing Moth x2, Larva x2
• Goblin x2, Sword Rat x2
• Larva x4

B4FEdit

• Sand Worm (Boss)

MusicEdit

The background music that plays inside the Adamant Isle Grotto is Final Fantasy IV's "Dungeon" theme.

GalleryEdit

Inside the Adamant Isle Grotto in the SNES version.

Adamant Isle Grotto on the World Map in the SNES version.