“Smugglers on the U.S.-Mexico border have become so sophisticated in moving drugs that one ‘super tunnel’ raided this week featured a railway. The tunnel stretched the length of eight football fields, from a Tijuana warehouse to a San Diego warehouse, and had a rail system, lighting, electricity, and metal beams to prevent a cave-in.”
Source: Drug ‘super tunnel’ with railway raided on Mexico border – CNN.com
