Alacalufes National Reserve is located between Canal Concepción and Strait of Magellan

Strait of Magellan

The Strait of Magellan comprises a navigable sea route immediately south of mainland South America and north of Tierra del Fuego...

. It is composed of western archipelagos, its landscape is filled with low mountain-like islands and islets, lots of channels and fjords. It was created in 1969.

There are two types of weather within the reserve: "high humidity, mild cold" and, "Isothermal tundra

Tundra

In physical geography, tundra is a biome where the tree growth is hindered by low temperatures and short growing seasons. The term tundra comes through Russian тундра from the Kildin Sami word tūndâr "uplands," "treeless mountain tract." There are three types of tundra: Arctic tundra, alpine...

", with a mean temperature of 7.2 °C (45 °F) and 6.5 °C (43.7 °F), respectively. Rainfall can reach up to 2450 mm (96 in) per year.

Vegetation is made up of coastal grasslands and thickets, formations of Coihue

Coihue

Nothofagus dombeyi is a tree species native to southern Chile and the Andean parts of Argentine Patagonia. It grows from 35 to 45° South latitude between 700 and 1,200 m above mean sea level. It forms dense forests, like those found in the Los Alerces and Nahuel Huapi national parks...

 and Sphagnum

Sphagnum

Sphagnum is a genus of between 151 and 350 species of mosses commonly called peat moss, due to its prevalence in peat bogs and mires. A distinction is made between sphagnum moss, the live moss growing on top of a peat bog on one hand, and sphagnum peat moss or sphagnum peat on the other, the...

; while fauna is composed of several birds and mammals.

Its area covers parts of the four provinces of Magallanes and Chilean Antártica Region.