Exit on U.S. side of cross-border tunnel announced today by U.S. Attorney's Office and partners. The subterranean passageway, stretching from Tijuana, Mexico to the purported retail store near the Otay Mesa Port of Entry known as “Buy 4 Less,” is estimated to be about 1,933 feet long, 55 feet deep and 4.5-feet in height, with reinforced walls, rail and ventilation systems and electricity.