Icalma Lake
Icalma Lake is a lake of glacial origin located in the Andes of the La Araucanía Region of Chile. A hamlet on the southern shore of the lake is also called Icalma. About from the hamlet is Icalma Pass, in elevation and on the border with Argentina. The pass is traversed by a road, unpaved in Chile in 2017 and sometimes impassable during the Southern Hemisphere winter due to heavy snows. Icalma Airport is located northeast of the hamlet and some 8 kilometres from the border with Argentina.
Icalma Lake is connected to the Laguna Chica de Icalma by a short stream about long. The two lakes together have a surface area of. Icalma Lake drains northeastwards by way of a long river named Rukanuco. Icalma Lake and nearby Galletué Lake are the sources of the Bio Bio River.
Flora and fauna
The most abundant species of fish in the lake is the brown trout. The lake also has a population of rainbow trout. Neither species is native to Chile.The lake and village are in the ecoregion of the Valdivian Temperate Rain Forest. The monkey-puzzle tree locally called "pehuen" is the most distinctive of the tree species in the forest.