Magica's Island is a volcanic island off the coast of Calisota.
A volcano island whose peak she vainly carved into her own likeness, this island was owned by Magica De Spell, who may or may not have raised it herself from the depths, in the late 1980's. She used it as a lair, perfect for targeting Scrooge McDuck's Money Bin in Duckburg.
Behind the Scenes
Magica's Island first appeared in Send in the Clones in 1987, serving as Magica's lair throughout the DuckTales series. It is possible that the DuckTales 2017 version of Magica lived in a counterpart of this island before she was sealed into the medallion.