Huechulafquen Lake is a lake

Lake

A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams,...

 in Neuquén Province

Neuquén Province

Neuquén is a province of Argentina, located in the west of the country, at the northern end of Patagonia. It borders Mendoza Province to the north, Rio Negro Province to the southeast, and Chile to the west...

, Patagonia

Patagonia

Patagonia is a region located in Argentina and Chile, integrating the southernmost section of the Andes mountains to the southwest towards the Pacific ocean and from the east of the cordillera to the valleys it follows south through Colorado River towards Carmen de Patagones in the Atlantic Ocean...

n Argentina

Argentina

Argentina , officially the Argentine Republic , is the second largest country in South America by land area, after Brazil. It is constituted as a federation of 23 provinces and an autonomous city, Buenos Aires...

. This glacial lake

Glacial lake

A glacial lake is a lake with origins in a melted glacier. Near the end of the last glacial period, roughly 10,000 years ago, glaciers began to retreat. A retreating glacier often left behind large deposits of ice in hollows between drumlins or hills. As the ice age ended, these melted to create...

 is located in the Andean mountains

Andes

The Andes is the world's longest continental mountain range. It is a continual range of highlands along the western coast of South America. This range is about long, about to wide , and of an average height of about .Along its length, the Andes is split into several ranges, which are separated...

 in Lanín National Park

Lanín National Park

Lanín National Park is a national park of Argentina, located in the Neuquén Province, with forests of diverse tree varieties, mainly Fagaceae and conifers such as the lenga and the Araucaria, many species of which are not found elsewhere in Argentina....

 some 25 kilometres from Junín de los Andes

Junín de los Andes

Junín de los Andes is a village in the province of Neuquén, Argentina. It has 10,592 inhabitants as of the , and is the head town of the Huiliches Department...

 and 60 kilometres from San Martín de los Andes

San Martín de los Andes

-References:* - Official website.-External links:*...

. It is one of Argentina's most important Andean lakes, and is fed by meltwater streams and Lakes Paimún and Epulafquén

Epulafquén Lake

Epulafquén Lake is a lake in Neuquén Province, Patagonian Argentina. This glacial lake is located in the Andean mountains in Lanín National Park. Hydrologically it forms one lake together with Huechulafquen Lake and is then considered an arm of it. It is separated from Huechulafquen Lake by a small...

.

The lake's name is Mapuche, and means long lake, an apt name for this nearly 30 km long, 5 km wide lake, which has a surface area of 104 km².