How Mexico's Billion-Dollar Drug Lord Escaped Prison

This is the hole through which Mexico's most notorious drug lord escaped from a maximum security prison for the second time - using it to flee through an elaborate network of tunnels underneath his cell.

Joaquin 'El Chapo' Guzman, billionaire head of the powerful Sinaloa Cartel, made his jail break on Saturday morning and is on the run from Altiplano jail, 50 miles outside of Mexico City, security officials said.

His audacious escape saw him dash through the mile-long tunnel system, which led to a building under construction next to the prison - from where he collected clothes left for him by his conspirators.