Locating in the Department of La Paz -Bolivia. The aymaras created the sukakollos or systems where they inserted the gutters of water with the cultivation platforms. The accumulated heat was transmitted to the interior of the earth, reducing the effect of the droughts and avoiding the erosion of the floors. The technique allowed that a hectare surrendered as 10, according to anthropologist Oswaldo Rivera’s recent investigation. But the Spaniards arrived and with them, the plow. The ingenious process was forgotten

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