In the south the valleys are drier and they are reminiscent of Mediterranean and further south even of Arizonian desert, here there are xerophilous plants and bushes.
Entreandian region is relatively dry, only the bottoms of the valleys are irrigated by several large rivers which start here its long journey to the Atlantic Ocean. The valleys are relatively densely populated due to its mild climate and are also used extensively for agriculture. Most of the classical vegetables such as corn, tomatoes, onions etc. originate here.
Here you will also find the lager cities of Cochabamba, Tarija and constitutional capital of Bolivia; Sucre. The variation of temperature during the years is from 11 to 25°C. You will also find the Bolivian wine making region here, which contains the highest situated vineyards in the world.
The whole of this valley region has greater biodiversity then all the others due to the variety of ecosystems and biogeographical zones. It is also the boundary between the mountains and the lowlands, so flora and fauna of the two zones blend into each other here. You will find here various monkeys, guinea-pigs, viscachas, armadillos, opossums and even sloths and various felines. There are many varieties of birds, including toucans and parrots.
Lowlands and Llanos
Even though lowlands and llanos take up nearly 70% of Bolivia, they are inhabited only by 20% of the population. Topography of this region is rather monotonous, it mainly consists of flatlands at an altitude of 200-300m, and here and there are small hills. Only on the eastern border with Brazil and in the south there are low mountain ranges reaching to maximum of about 1200m. The whole region can be again divided into three parts; northern, southern and central.
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