Inside Joaquin "El Chapo" Guzman's 2015 prison break

Joaquin "El Chapo" Guzman, the world's most-wanted drug lord, was captured Friday six months after he tunneled his way out of a maximum security prison in Mexico.

During the manhunt for El Chapo, his pursuers discovered a tunnel entrance concealed in the plumbing of one of his houses, in this case, beneath the tub.

El Chapo devised ingenious smuggling methods. He packed drugs into fake cucumbers and bananas and mixed them in with shipments of real produce.

But the thing he worked hardest on was making sure he could always get away.

Guzman was the first Mexican drug trafficker to hire architects and mining engineers to build elaborate super-tunnels, complete with ventilation systems, electricity and railways to ferry drugs under the U.S.-Mexico border.

Mexican authorities led CBS News to a tunnel they found unfinished and just short of the border fence in Tijuana.

The tunnel was discovered just a couple of weeks after El Chapo's great escape. His cartel wasn't just focused on building his escape tunnel; they continued building drug tunnels at the same time.