Mexican drug smuggling tunnel unearthed The six feet by two feet tunnel, equipped with lighting and ventilation, was discovered on Saturday when officers raided a business on the Arizona side of the border, which concealed the US entrance. The discovery "is yet another reminder of how desperate these criminal organisations are and the extent they will go to further their drug dealing operations," said Doug Coleman of the US Drug Enforcement Administration. "The DEA continues to work with our counterparts nationally and internationally to bring to justice these drug trafficking organisations as well as to block their smuggling routes into this country," he said. Last November two major drug smuggling tunnels were found near the Mexican border with California in Tijuana, one of them 400 yards long and the other 600 yards in length. Some 45,000 people have been killed since 2006, when Mexico launched a major military crackdown against the powerful drug cartels that have terrorised border communities as they have battled over lucrative smuggling routes.