Alberto de Agostini National Park

Alberto de Agostini National Park, a protected area in southern Chile, was established on January 22, 1965. Its territory was carved from the former "Hollanda" forest reserve and "Hernando de Magallanes National Park." Spanning 1,460,000 hectares, it borders Yendegaia National Park and encompasses the Cordillera Darwin range—the Andes' final continental stretch before the mountains break into a chain of small islands that descend into the Pacific Ocean and the Beagle Channel.

In 2005, UNESCO designated the park, together with Cabo de Hornos National Park, as a Biosphere Reserve. As part of the Magallanes Sub-Polar Evergreen Rainforest, UNESCO notes the area's "mosaic of contrasting ecosystems and unique and singular characteristics on a world level." The park features numerous tidewater glaciers, steep fjords, and includes Gordon, Cook, and Londonderry islands, as well as part of Hoste Island (excluding the Hardy Peninsula and other sections).

The park is named after Father Alberto Maria De Agostini, a Salesian priest, Italian missionary, explorer, photographer, and writer known for his discoveries and maps of the region. Charles Darwin visited the area, encountering native Fuegian peoples—the Selkʼnam, Haush, Manekʼenk, and Yaghan—in the Murray Channel. The Yaghan had settled along the channel roughly 10,000 years ago. This encounter proved vital to Darwin's theory of human evolution. Other areas, like Agostini Fjord, were only discovered in the last century.

Located 148 kilometers (80 nautical miles) southwest of Punta Arenas in the Magallanes y la Antártica Chilena region, the park stretches across three provinces: Magallanes, Tierra del Fuego, and Antártica Chilena. Its coastline is highly irregular, deeply indented by fjords. The Cordillera Darwin is the park's centerpiece, with slopes dropping steeply to the sea, dominated by Monte Darwin and Monte Sarmiento. Valleys not filled by the sea are covered by glaciers, which also occupy small high plateaus.

Glaciers have sculpted much of the landscape. The largest, Marinelli Glacier, was retreating as of 2008. Seno Pía, an embayment of the Beagle Channel, offers stunning scenery including Mount Darwin. Another highlight is the Avenue of the Glaciers—a figurative term for a stretch of the Beagle Channel's northwest arm where several glaciers are visible along the north shore: España, Romanche, Alemania (also called Roncagli), Italia, Francia, and Holanda.

The climate is subpolar oceanic—wet, cold, and windy. The park belongs to the Magellanic subpolar forests ecoregion, home to trees like coihue (Nothofagus betuloides) and canelo (Drimys winteri). Mammals include the Culpeo or Andean fox (Lycalopex culpaeus), South American gray fox (Lycalopex griseus), marine otter (Lontra felina, known locally as chungungo), South American sea lion, southern elephant seal, leopard seal (Hydrurga leptonyx), Chilean dolphin (Cephalorhynchus eutropia), Burmeister's porpoise (Phocoena spinipinnis), Peale's dolphin (Sagmatias australis), humpback whale (Megaptera novaeangliae), and guanaco (Lama guanicoe). Sea birds include the southern royal albatross (Diomedea epomophora), Magellanic woodpecker (Campephilus magellanicus), white-crested elaenia (Elaenia albiceps), cormorant, and austral thrush (Turdus falcklandii).

No roads lead to the park; most visitors arrive by cruise ship or other boat from Punta Arenas, or by plane from Puerto Williams. There is an admission fee (foreigners pay double the Chilean rate), few tourist facilities, and park rangers are present.