12. Clandestine Drug Trafficking Tunnels
From San Diego to El Paso, law enforcement has uncovered sophisticated subterranean passageways used to shuttle illegal drugs beneath urban neighborhoods and border checkpoints. These tunnels often feature reinforced concrete lining, ventilation shafts, lighting, and even rail tracks to move contraband efficiently. In 2016, US Customs and Border Protection discovered a half-mile tunnel under Otay Mesa equipped with electric lighting and a rail cart system.
Such hidden networks highlight the ongoing cat-and-mouse game between traffickers and authorities. Learn more from CBP Press Release.
