Joaquín Archivaldo Guzmán Loera is a former Mexican drug lord who headed the Sinaloa Cartel, a criminal organization named after the Mexican Pacific coast state of Sinaloa where it was formed. Known as “El Chapo Guzmán” he became Mexico’s top drug kingpin in 2003 after the arrest of his rival Osiel Cárdenas of the Gulf Cartel, and until his February 2014 arrest, he was considered the “most powerful drug trafficker in the world” by the United States Department of the Treasury.

The Secret Underground Tunnels Of Drug Kingpin Joaquin

An open steel door leads from a tunnel underneath one of the houses of Joaquin Chapo Guzman to the city's drainage system in Culiacan. DANIEL BECERRIL/REUTERS

The Secret Underground Tunnels Of Drug Kingpin Joaquin

A tunnel from one of the houses of Joaquin Chapo Guzman leading to the city's drainage system is pictured in Culiacan. DANIEL BECERRIL/REUTERS

The Secret Underground Tunnels Of Drug Kingpin Joaquin

A steel ladder leads to the bottom of a removable bathtub at one of the houses of Joaquin Chapo Guzman, inside a tunnel leading to the city's drainage system in Culiacan. DANIEL BECERRIL/REUTERS

The Secret Underground Tunnels Of Drug Kingpin Joaquin

The bottom of a removable bathtub at one of the houses of Joaquin Chapo Guzman is seen inside a tunnel leading to the city's drainage system in Culiacan. DANIEL BECERRIL/REUTERS

The Secret Underground Tunnels Of Drug Kingpin Joaquin

A steel ladder leads to the bottom of a removable bathtub at one of the houses of Joaquin Chapo Guzman, inside a tunnel leading to the city's drainage system in Culiacan. DANIEL BECERRIL/REUTERS

The Secret Underground Tunnels Of Drug Kingpin Joaquin

Journalists use flashlights while walking through the city's drainage system towards a tunnel that comes out of one of the houses of Joaquin Chapo Guzman in Culiacan. DANIEL BECERRIL/REUTERS

The Secret Underground Tunnels Of Drug Kingpin Joaquin

An open steel door leads from the city's drainage system to a tunnel underneath one of the houses of Joaquin Chapo Guzman in Culiacan. DANIEL BECERRIL/REUTERS

The Secret Underground Tunnels Of Drug Kingpin Joaquin

A Reuters journalist stands outside a steel door leading from the city's drainage system into a tunnel underneath one of the houses of Joaquin Chapo Guzman in Culiacan. DANIEL BECERRIL/REUTERS

The Secret Underground Tunnels Of Drug Kingpin Joaquin

A drain exit which leads to a tunnel underneath one of the houses of Joaquin ChapoGuzman is seen in a neighborhood in Culiacan. DANIEL BECERRIL/REUTERS

The Secret Underground Tunnels Of Drug Kingpin Joaquin

Part of the city's drainage system which leads to a tunnel underneath one of the houses of Joaquin Chapo Guzman is seen in Culiacan. DANIEL BECERRIL/REUTERS

The Secret Underground Tunnels Of Drug Kingpin Joaquin

A Mexican marine lifts a bathtub that leads to a tunnel and exits in the city's drainage system at one of the houses of Joaquin Chapo Guzman in Culiacan. DANIEL BECERRIL/REUTERS

The Secret Underground Tunnels Of Drug Kingpin Joaquin

A Mexican Marine points his weapon in the city's drainage system after walking through a connecting tunnel underneath the houses of Mexican kingpin Guzman during a presentation for the media in Culiacan. DANIEL BECERRIL/REUTERS

The Secret Underground Tunnels Of Drug Kingpin Joaquin

A Mexican Marine stands in the city's drainage system after walking through a connecting tunnel during a presentation for the media n Culiacan. DANIEL BECERRIL/REUTERS

The Secret Underground Tunnels Of Drug Kingpin Joaquin

A Mexican Marine stands in the bedroom of one of the houses of Joaquin Chapo Guzman during a presentation for the media in Culiacan. DANIEL BECERRIL/REUTERS

The Secret Underground Tunnels Of Drug Kingpin Joaquin

Military soldiers stand outside one of the houses of Mexican kingpin Joaquin Chapo Guzman during a presentation to the media in Culiacan. DANIEL BECERRIL/REUTERS

Mar 02, 2014