Note 484 — Chapter XCIX

This description of the Collao is very accurate. South of the Vilcañota mountains the Andes separate into two distinct chains, namely the cordillera or coast range and the Eastern Andes, which include the loftiest peaks in South America, Illimani and Sorata. The Collao is the region between these two ranges. It contains the great lake of Titicaca, and consists of elevated plains intersected by rivers flowing into the lake.