THE COUNTRY OF THE SHEPHERDS 



65 



Fro. 36 — Regional diagram for the Eastern Cordillera or Cordillera Vilcapampa. 

 Note the crowded zones on the right (east and north) in contrast to the open suc- 

 cession on the left. In sheltered places woodland extends even higher than shown. 

 At several points patches of it grow right under the snowline. Other patches grow 

 on the floors of the glaciated valley troughs. 



in the marshy spots in the overdeepened parts of the valleys fur- 

 nish them with grass for their thatched roofs. And, most im- 



