Kawésqar National Park, formerly Alacalufes National Reserve, is located between Canal Concepción and the open Pacific Ocean, on both sides of Strait of Magellan in Chile. It is composed of western archipelagos; its landscape is filled with low mountain-like islands and islets and many channels and fjords. It was created in 1969 with an area of 2,313,875 hectares.
There are two types of weather within the reserve: "high humidity, mild cold" and, "Isothermal tundra", with a mean temperature of 7.2 °C and 6.5 °C, respectively. Rainfall can reach up to 2,450 mm per year.
Vegetation is made up of coastal grasslands and thickets, formations of Coihue and Sphagnum; while fauna is composed of several birds and mammals.
Its area covers parts of two out of the four provinces of Magallanes and Chilean Antártica Region: Magallanes Province and Última Esperanza Province.