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1203.  A cultivated valley in northern Ecuador.  A field of barley in the foreground.  Cultivated fields are carried up on the slopes of the mountains as far as practicable, sometimes when the steepness would seem to preclude culture.  Such fields are worked by hand.

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1580.  A river bed in the desert region of southern Bolivia, near Atocha.  The stones inclosed in heavy wire netting are used to protect river banks against erosion in times of flood.