Photograph by O. F. Cook 



WHERE FARMING IS UPHILL WORK 



This coca plantation is on a very steep hillside near Colpani, in the lower Urubamba 

 Valley, at an elevation of about 5.000 feet. Many plantations are made in this way on steep 

 slopes. Contrary to the custom that prevails in most tropical countries, the rows always run 

 up and down the slope instead of across. 



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