The dim tunnel passage hugs narrow, winding concrete steps that lead 55 feet down, with a ceiling no higher than 4 1/2 feet, making it a claustrophobe’s nightmare.
The underground passage stretching from Tijuana, Mexico, to a warehouse in California near the Otay Mesa Port of Entry known as “Buy 4 Less” is about 2,000 feet long and features reinforced walls, rail, ventilation, and electrical systems.
