MEXICO: Another Sophisticated Pot Tunnel Uncovered; 17 Tons Confiscated Near San Diego.

                                          AP/ GUARDIAN with :45 Video

     For the third time this year, officials have discovered a sophisticated narco tunnel in the San Diego area.
     They also seized more than 17 tons of marijuana.
     The 400 meter tunnel connected industrial warehouses in Otay Mesa...south of San Diego...to Mexico.
     California's clay-like soil makes digging easy easy with shovels.
     More than 70 border tunnels have been uncovered since October 2008,