Felipe Cancino, trail runner and activist, takes a 120 km trail through the Cajón del Maipo revealing the impacts that the Alto Maipo hydroelectric project has on this fragile ecosystem and the threat it poses to the drinking water supply for the 7.1 million inhabitants of the Metropolitan 

impacts that the Alto Maipo hydroelectric project has on this fragile ecosystem and the threat it represents to the drinking water supply for the 7.1 million inhabitants of the Metropolitan Region.

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