he invented the narco tunnel. >> the narco tunnel. the ubiquitous tunnels burrowed underneath the u.s./mexico border that the cartels use to smuggle vast quantities of drugs into the u.s. >> for a guy that dropped out of school at 8 years old he figured out you couldn't smuggle large amounts of weed in tractor-trailers because it smells. dogs will smell it. he created tunnels with hydraulics that go under the ground. you can move all kind of weed easily. he's an extremely sophisticated businessman. >> his rides rise from abject poverty to running one of the most powerful drug syndicates on the planet, which had thousands of members, and spanned the globe, made el chapo a folk hero in mexican culture. >> he's a little boy that sold oranges on the street, and then rises from absolute nothingness, can't read or write, he's completely illiterate, to being a billionaire. that's extremely captivating as a mythology for poor working people in a very impoverished country. >> he started in the drug trade in the 1970s, and was arrested in 1993.