The Andes: 7000 Km long, covering 6 countires
North to South: Colombia to argentina ( West coast of South America)
Farming
Terraces- food production on valley sides
Crops- Soya, maize, rice, cotton, potato
Llamas- Carry goods for irrigation, buildings, mining transport
Alpacas- Fine cloth
Hydroelectic power
Narrow valleys: Easy to dam, cuts costs, steep relief, higher velocity, more electricity
2009 el platinal HEP: Dam across Canete river, 2nd largest peru, $200 million
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