The Lacuy Peninsula ( es, península de Lacuy), alternatively spelled with ''i'', is located in the northwestern corner of

Chiloé Island Chiloé Island ( es, Isla de Chiloé, , ) also known as Greater Island of Chiloé (''Isla Grande de Chiloé''), is the largest island of the Chiloé Archipelago off the west coast of Chile, in the Pacific Ocean. The island is located in southern ...

. The peninsula lies a few kilometer west of

Ancud Ancud () is a city in southern Chile located in the northernmost part of the island and province of Chiloé, in Los Lagos Region. It is the second largest city of Chiloé Archipelago after Castro. The city was established in 1768 to function as ...

but the

isthmus An isthmus (; ; ) is a narrow piece of land connecting two larger areas across an expanse of water by which they are otherwise separated. A tombolo is an isthmus that consists of a spit or bar, and a strait is the sea counterpart of an isthmus ...

that connects to the rest Chiloé Island lies more than 10 km west of Ancud. During colonial times, the peninsula hosted a Spanish fort system consisting of three batteries, one sentinel outpost, and one fort. The fort, named Fuerte de Agüi, was the site of the battle of Agüi in 1820. The geological Lacui Formation is named after the peninsula.

References

{{coord, 41.823167, S, 73.9981944, W, type:landmark_source:enwiki, display=title Chiloé Archipelago Peninsulas of Chile