Colombian Massif
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Colombian Massif (from the Spanish Macizo Colombiano) also known colloquially as Nudo de Almaguer (Node of Almaguer) refers to a group of mountains in south central Colombia, in which 70% of the Colombian safe water for human consumption and irrigation originates; formed by the Magdalena River, Cauca River, Caquetá River, Patía River and Putumayo River mainly.
The massif is mainly within the territories of the Cauca Department and Nariño Deparment covering a total area of 3,268,237 Hectares.