Under the U.S.-Mexico border, miles of tunnels worth millions of dollars — to traffickers
The cocaine travels north through the sewer. Sometimes the traffickers send it floating in bags on a river of wastewater. Sometimes they crawl with it through mud and human excrement until they hit U.S. soil. As the U.S. border wall rose just north of this city, the drug trade here has been driven underground. Mexican and U.S. patrols have found tunnel
after tunnel drilled into an 80-year-old drainage system that connects the two countries, 15 feet below the surface.
Mexican national guardsmen wielding flashlights form the front line, tracking shovel-bearing drug traffickers through the seven-mile stretch of drainage and sewage lines on the Mexican side. They wonder out loud how many tunnels they haven’t been able to find. “Nogales is the capital of cross-border tunnels between Mexico and the United States,” said Ricardo Santana Velázquez, the Mexican consul general in neighboring Nogales, Ariz.
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