Corcovado National Park, National park in Palena Province, Chile

Corcovado National Park is a protected area in Los Lagos Region, centered around a 2,300-meter (7,550-foot) stratovolcano surrounded by several lakes at its base. The terrain features steep slopes and dense forests that transition from rainforest to alpine zones as elevation increases.

Most of the land was federal, largely under the Chilean Armed Forces, until the 1994 purchase of an 840-square-kilometre parcel by the Conservation Land Trust and U.S. philanthropist Peter Buckley. In 2002 Doug Tompkins proposed to President Ricardo Lagos that private lands be given to Chile if the state added adjoining federal land; General Juan Emilio Cheyre endorsed the idea. Lagos formally designated the park, Chile's fourth largest, in January 2005.

The park's name comes from the Corcovado volcano, and the bay it faces was once a pirate lair, now proposed as Chile's first marine sanctuary. The 2010 film 180 Degrees South documented an expedition to climb Cerro Corcovado. Access is by private boat to Bahía Tictoc or by an almost impassable track from Villa Santa Lucía.

Land access is limited to a single public trail along the Carretera Austral; the Tictoc Bay sector can be reached only by private boat, with occasional Navy vessels. The overland route from Villa Santa Lucía is an almost impassable track. Few Chilean and foreign visitors come each year, so plan self-sufficiently.

The bay bordering the park was found to be a key nursery area for blue whales, the largest animals on Earth. Its estuaries, where the Corcovado and Tic Toc rivers meet the sea, draw large colonies of shorebirds and penguins on the rocks. The bay was once a pirate lair and is now proposed as Chile's first marine sanctuary.