??? is the name of a location in the Maxima version of World of Final Fantasy, located on the "Nibelheim" continent in Grymoire. It is one of six unmarked locations on the world map that can only be reached by airship, accessible after reading a message inscribed on the tombstone at the mysterious location within The Crystal Tower. On the world map, its location is situated atop the highest peak near The Dragon Scars.
The location consists of only one room and resembles the Secret Scar of The Dragon Scars. At the end of the room is a Puzzle Switch that must be activated to break a seal required to encounter The Immortal Dark Dragon back at the mysterious location. The Puzzle Switch is referred to as the Thunder Seal and requires a stack with the combined weight stat of 14 of higher, and Thunder elemental resistance of 175 or higher to activate it.
"Labyrinth of Dragons" is the background theme that plays in this area.