El Yeso Dam

El Yeso is a reservoir located in the Andes, in the Santiago Metropolitan Region, Chile. It was formed by the damming of the Yeso River, part of the Maipo river basin. The reservoir has a capacity of 250,000,000 m³ and was completed in 1964.
El Yeso reservoir, along with the nearby Laguna Negra, is a major source of drinking water for Santiago.
Its water has a turquoise hue and is suitable for fishing and windsurfing.
Less than 2 kilometers drive, is "Refugios del Yeso", a shelter built in the 50s to house workers during the construction of the same reservoir. In the Beagle Conflict, it was used by the Chilean Army, given its strategic value.