Chiloé Island

Chiloé Island is a major landmass located in southern Chile.

It is the largest island located entirely within the country of Chile. It is also the second largest island in Chile, following Isla Grande de Tierra del Fuego. On a larger scale, it ranks as the fourth largest island in South America. The island is part of the Chiloé Archipelago in the Pacific Ocean. It sits within the Los Lagos Region. Geographically, the island is a continuation of the Chilean Coast Range. The Sea of Chiloé is actually a submerged portion of the Chilean Central Valley.

The island's landscape is shaped by distinct geographic features. It is roughly rectangular in shape. A belt of mountains runs from the northwest to the southeast. The northern mountains are known as the Cordillera del Piuchén. The southern mountains are the more subdued Cordillera de Pirulil. The western half of the island is a wilderness. It contains contiguous forests and swamps. The northeastern side features rolling hills. These hills contain a mosaic of pastures, forests, and cultivated fields. The western shores are rocky and relatively straight. The eastern and northern shores are more complex. They contain many inlets, bays, and peninsulas.

Climate plays a huge role in how the island looks. Chiloé has a cool temperate oceanic climate. It also follows a Mediterranean precipitation pattern. The island experiences a rain shadow effect caused by its mountains. The western side is rainy and wild. It is home to the Valdivian temperate rain forests. These are one of the few temperate rain forests in the world. The eastern shore is warmer and drier because the mountains block much of the moisture. The island runs from 41º47'S to 43º26'S. This specific climate supports a wide variety of life.

Human history on the island began over 7,000 years ago. Early nomadic groups lived along the coast. They focused on hunting and fishing for marine creatures. They collected clams, mussels, and Choromytilus chorus. You can still find their remains in middens. A midden is an ancient dump for domestic waste. These sites contain mollusc shells, stone tools, and bonfire remains.

When Spanish explorers arrived in the 16th century, they met the Chono, Huilliche, and Cunco peoples. The original inhabitants were skilled sailors. They navigated treacherous waters in boats called dalcas.

The name Chiloé comes from the Huilliche language. It means "place of seagulls."

Spanish influence changed the island's culture and settlement. The explorer Alonso de Camargo first saw the coast in 1540. Captain Francisco de Ulloa reached the Chacao Channel in 1553. He is considered the first European discoverer of Chiloé. The Spanish claimed the archipelago later in the 1550s. The city of Castro was founded in 1567. Jesuit missionaries arrived at the turn of the 17th century. They built many chapels to evangelize the local population. By 1767, there were 79 such chapels. Today, more than 150 traditional wooden churches exist on the islands. Many are UNESCO World Heritage Sites.

Economic shifts shaped the towns of the island. In the 1800s, Chiloé was a center for French whalers. From the mid-19th century to the early 20th century, it produced railroad ties. This industry led to the growth of towns like Quellón, Dalcahue, and Chonchi. In 1843, many Chilotes migrated to Patagonia for work. They often moved to Punta Arenas. Inland areas were occupied as farming rose in the late 1800s. A railroad between Ancud and Castro was built in 1912. This railroad is no longer in service. The capital city is Castro, located on the east side. Ancud is the second largest town.

The marine environment near Chiloé is incredibly diverse. The northwestern area near Chiloé National Park is home to many species. You can find blue whales and sei whales there. Chilean dolphins and Peale's dolphins also live in these waters. Sea lions, marine otters, and penguins are common. The Islotes de Puñihuil Natural Monument is very special. It is the only known shared breeding site for Humboldt and Magellanic penguins. Other species like the red-legged cormorant and kelp gull breed there too. The Alfaguara project works at Puñihuil to research and conserve these animals. This research helps protect the local communities and the sea.