This page contains Final Fantasy 3 Hints for Nintendo DS called "Secret dungeon" and has been posted or updated on Jun 3, 2007 by diamarl1456. Let us know what you think of this Hint by thumbs voting.
Send seven mails to another player through Mog Net. Then send four mails using Mog Net to the NPC "The 4 Old Men", and another four mails to "King Alus". It does not matter what order this is done, as long as Alus is last. After reading the fourth one you will unlock the new dungeon. Ride on the Nautulus and go east of the floating continent. Once there you will see a shadow in the water. Go underwater here and move into the coral to enter a cave. There is no real dungeon here, but there is a difficult boss, Iron Giant.
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