In the rugged landscapes of the North-West of Argentina the Qolla Indian communities are trying to switch to renewable energies. The Pachamama, the "Mother Earth", is more and more revered by the indigenous people of the Quebrada de Humahuaca, a UNESCO World Heritage Site, a deep valley that for 10.000 years was a social and cultural crossroad, a caravan road for the Inca Empire. This important link between Río de la Plata and Peru for the Spanish empire today has been rediscovered by a sustenable and environmental friendly tourism. Between the unforgettables landscapes of the Quebrada the Cerro de los Siete Colores (The Hill of Seven Colors) is one of the hills bordering the Quebrada de Purmamarca with its unique color range, the product of a complex geological history composed of 7 different colours, all of which derive from different types of rocks. North West of the Quebrada, on the road to Chilean border, the salt mines of Salinas Grandes covering 212 square km are the third salt