Chonos Archipelago (Archipiélago de los Chonos) is a series of low mountainous elongated islands with deep bays are traces of a drowned coastal range. Most of the islands are forested with little or no human settlement. The deep Moraleda Channel separates the islands of the Chonos Archipelago from the mainland of Chile and from Magdalena Island.
Some groups of islands are grouped into minor archipelagoes such as the Guaitecas Archipelago. Guaitecas Archipelago have its own municipality and possesses the only settlement in the archipelago, Melinka. All islands are part of the Aisén Region.