“The passageway that zigzagged underground between San Diego and Tijuana, Mexico, was so sophisticated that officials call it a ‘super tunnel.’ The drug tunnel stretched the length of nearly six football fields and had lighting, ventilation and an electric rail system, authorities said Thursday. It was 35 feet deep, 4 feet tall and 3 feet wide. And it was built by one of Mexico’s most notorious criminal organizations, the Sinaloa cartel, U.S. Attorney Laura Duffy told reporters.”
Source: 3 detained after ‘sophisticated’ San Diego-Tijuana drug tunnel found – CNN.com
