There are on the plateau many towns and several cities, including El Alto and Oruro in Bolivia, Juliaca and Puno in Peru.
Today, major economic activities in the Altiplano include mining, llama and vicuña herding, and services (in its cities).
The Altiplano is an area of inland drainage (endorheism) lying in the central Andes, occupying parts of northern Chile, western Bolivia, southern Peru and northwest Argentina.
Unlike conditions in Tibet, the Altiplano is dominated by massive active volcanoes of the Central Volcanic Zone to the west, such as Ampato (6288 m), Tutupaca (5,816 m), Parinacota (6348 m), Guallatiri (6071 m), Paruma (5,728 m), Uturunku (6,008 m) and Licancabur (5,916 m), and the Cordillera Real in the north east with Illampu (6,368 m), Huayna Potosí (6,088 m), Janq'u Uma (6,427 m) and Illimani (6,438 m).
Several mechanisms have been put forth for the formation of the Altiplano plateau; hypotheses try to explain why the topography in the Andes incorporates this large area of low relief at high altitude (high plateau) within the orogen: At various times during the Pleistocene epoch, both the southern and northern Altiplano were covered by vast pluvial lakes.
[citation needed] The coldest temperatures occur in the southwestern portion of the Altiplano during the winter months of June and July.