3 Images

Underground Threat

THE SHAFT: A Mexican police officer Wednesday examines a tunnel running under the U.S.-Mexico border that officials say was used by drug smugglers. The tunnel was equipped with lighting, ventilation and a pulley system. (David Maung / AP)
Mexican authorities stands next to packages of drugs, believed to be marijuana, that was removed from the cross-border tunnel. (AP)
Abandoned wheelbarrows sit on the ground of the clandestine tunnel that passes under the US-Mexico border. (AP)