Chonos Archipelago is a series of low mountainous elongated islands with deep bays, traces of a submerged Chilean Coast 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. The largest islands are Melchor Island, Benjamin Island, Traiguen Island, Riveros Island, Cuptana Island, James Island, Victoria Island, Simpson Island (Chile), Level Island, Luz Island.