ItTCNl 



Photograph by Hiram Bingham 

 ONE OF THE HIGHEST AGRICULTURAL CANALS IN THE WORLD 

 The rich bottom lands of this elevated valley were desired by the Incas for growing potatoes. Accord- 

 ingly, the meandering stream was straightened and enclosed so as to prevent it from occupying any more 

 land than was absolutely necessary. It is in the upper valley of the Pampacahuana, a tributary of the 

 Urubamba, and is at an elevation of 12,800 feet. Potatoes are still raised on the slopes of this valley at an 

 elevation of slightly more than 13,000 feet. 



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