In Pirates of the Caribbean online where is royal caverns?

There is no mention of a location called "Royal Caverns" in the "Pirates of the Caribbean Online" game.

This may be a misunderstanding or a fictional location not part of the game.

Could you provide more context or information about what you're looking for? Maybe you're thinking of a specific area in the game, or you're referring to a different version of the Pirates of the Caribbean universe?