An unfinished 1,300-foot cross-border tunnel was discovered on August 4, 2020, after several days excavating the sandy Sonoran desert terrain near San Luis, Arizona. The tunnel measured 3 feet by 4 feet (91 cm by meters) and included a ventilation system, water lines, electrical wiring, rail system, and extensive reinforcement. The tunnel was located after discovering a sinkhole near cross-border fencing in mid-July

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Keywords: .., arizona, border, cbp, customs, department, dhs, glaser, homeland, jerry, luis, photo, protection, san, sector, security, states, tunnel, united, yuma