In this Aug. 19, 2012 photo, residents ride on horses near the Namococha Lagoon in Combaya, Peru, in the highlands of the northern state of Cajamarca. The mostly subsistence farmers who live ... more 
In this Aug. 19, 2012 photo, residents ride on horses near the Namococha Lagoon in Combaya, Peru, in the highlands of the northern state of Cajamarca. The mostly subsistence farmers who live downstream of what would become Peru's biggest open-pit gold mine oppose the project, known as Conga, for one simple reason: Water. The project would destroy four mountain lakes in order to extract more than 200 tons of gold. (AP Photo/Martin Mejia) less 
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Associated Press | Photo By Martin Mejia
Wed, Aug 29, 2012 1:56 PM EDT