we ride for 20 minutes before the lush green begins to thin, the jungle floor turns to sand. a half-mile further and the rain forest is gone. it's like we've entered a completely different ecosystem. from jungle to desert in a matter of feet. >> oh, this didn't exist. these lakes didn't exist. nothing did. it was just flat forest like we went through. this is all man-made. >> wow, oh, my god. oh, my god. and these are all toxic, toxic pools now. >> this is all mining pits that have been filled in after rainwater. >> they use on old brutal method merciless on the land, cutting down trees, blastic banks with