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In this photo taken Sept. 14, 2009, sheep herder Raul Herrera, 56, walks across the dry Quiulacocha lakebed, filled with mining tailings, the chemical and mineral sludge left over from processing ore on the outskirts of Cerro de Pasco, Peru. As the government continues its aggressive push to extract the country's vast mineral and oil reserves, communities such as Cerro de Pasco show the conflict Peru faces between environmental contamination and jobs that is fueling violent protests, some deadly, from the Andes to the Amazon. (AP Photo/Martin Mejia)