Laguna de los Cristales (lit. Lagoon of the Crystals) is a small lake located in the Andes of O'Higgins Region in Central Chile. The lake is natural in origin, but its water level was raised by a dam inaugurated in 1976 aimed to provide water for irrigation in Rengo.Dirección General de Aguas, Infraestructura Básica de Embalses, Dirección de Obras Hidráulicas del Ministerio de Obras Públicas Local folklore tells of a treasure, an entierro, that is hidden in the bottom of the lake.
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