Gulf of Corcovado (Spanish: Golfo de Corcovado) is a large body of water separating the Chiloé Island from the mainland of Chile.
Geologically, it is a forearc basin that has been carved out by Quaternary glaciers.
In colonial times the Gulf of Corcovado was a major obstacle that prevented major contact between the Spanish settlers in Chiloé Archipelago and the southern Chonos living in the archipelagoes of Guaitecas and Chonos.
[1] In the early 17th-century, Jesuits rounded the gulf instead of crossing it when traveling south by dalcas from their base in Castro.
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