in an isolated jungle clearing known as new el dorado, illegal gold miners have devastated the forestor miles around, polluted the ground water and rivers with mercury and caused one river to completely dry up. the question for those designing redd is how on earth does the rich world get its money to illegal miners, illegally occupying land in the middle of the jungle? until it can, there'll be little incentive here to do anything but keep on digging and destroying, although the miners don't think they're the problem. >> ( translated ): an illegal miner destroys less forest than a rancher. in one year, a rancher can destroy millions and millions of hectares and an illegal miner can stay in the same place for years. we destroy a fraction of what they destroy. >> reporter: brazil's meat industry is the biggest in the world and flavio the miner is right: cattle farmers are indeed responsible for the vast majority of the deforestation. early on, ranchers grabbed land up here too, and like the illegal loggers and miners, felled great swathes of rainforest. most farmers have fake titles to