358 



AMAZONIA AND LA PLATA. 



view extends over a chaos of mountains, which heyond Lake Tromen fill the space 

 between the frontier range and the course of the Rio Neuquen. Even east of this 

 river other heights are seen falling in the direction of the rocky Patagonian 

 pampas. 



East of the Lonquiinai, Llaima, Rifiihue, and Quetrupillan volcanoes, which 

 follow southwards along or near the main crest, the Argentine Cordillera i"esumes 



Fig. 146. — San Rafael Nevado. 

 Fcile 1 : 2,000,000. 



A 



5S\ / 



""'^ ■'">■"■ 



^ - ■■' 



70" 



West or Greer w ch 



30 Miles. 



its normal trend at an altitude sufficient for the summits to put on a snowy mantle 

 in winter. The Chapel-co rises to a height of 8,000 feet, and the section of the 

 system bearing the name of Cordillera de los Cipreses maintains an elevation of 

 (5,550 feet. 



But this section is broken by deep gaps, one of which, about the intermingled 

 sources of the Chilian Biobio and Patagonian Limay, falls to little over 3,000 feet, 

 and is accessible to wheeled traffic from the west. Farther south a gentle sloping 



