The universal geography : earth and its inhabitants

TEffi ARGENTINE UPLANDS. 869
hill separates an affluent of the Rio Limay from the Chilian lake Picaullu (Lacar,
Lajar), which stands ahout 2,400 feet above the sea, while the boquete de Perez
Rosalez, a third pass at the western extremity of Lake Nahuel-Kuapi, falls below
2,800 feet.
A second Argentine Cordillera, developed to the east of the first, is less ravined,
but also less elevated, though the peaks in the Sierras de Catalin and de las Angos-
40J
Fig. 147.—NAHtTKL-HnAiPi and NEIQHBOUMSQ MoUHTAEfa.
Scale 1 : 1,200,000.
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West oF Gi-eenj.icti
18 Miles.
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rjC h aicabi*co vieip
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turas rise to 5,000 feet. This section of the Argentine orographic system had
also at one time its active volcanoes, like the frontier Cordillera farther west. The
Alumine, Mesa, and Chapel-co heights are all cones of Andesite, while scores of
other peaks flank both sides of the Rio Collon-cura. Their extinct craters are
now clothed with beech and myrtle groves ; but a cone near the sources of the
Biobio has laid all the surrounding districts under ashes. Here the traces of