Book Appearances: The Voyage of the Dawn Treader
Movie Appearances: The Chronicles of Narnia: The Voyage of the Dawn Treader
Overview: Dragon Island is the lonely eastern island where Eustace is transformed into a dragon.
Place in the books
Dragon Island matters because it is where Eustace’s inward ugliness becomes outwardly visible. The place is rich with treasure, isolation, and dragon-history, all of which sharpen the moral point of the episode.
It is also one of the clearest examples of how a Dawn Treader island can function both as adventure and diagnosis. The island exposes a character, not a map alone.