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The Quichua Indian village of Puna is built entirely of adobe. It seems as if a heavy rain would 

 wash all the structures away, but they are nevertlieless able to withstand climatic conditions for a num- 

 ber of years 



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The railroad between La Quiaca and Salta, Argentina, runs through a narrow, rocky gorge 

 flanked by high, barren hills, over the tops of which may be seen the snow-crowned peaks of the Andes 



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