SAN YSIDRO – (INT) – Land beneath the US-Mexico border is beginning to look like Swiss cheese.

Two sophisticated smuggling tunnels connecting commercial buildings in San Diego’s Otay Mesa industrial park with warehouses in neighboring Tijuana were uncovered this week.

One 600 yard long tunnel was equipped with lighting, a crude rail system and wooden trusses. A 73-year-old Chula Vista woman was arrested for allegedly overseeing the logistics at one warehouse where the tunnel terminated.

Another tunnel stretched for more than 700 yards. It was equipped with a multi-tiered electric rail system and an array of ventilation equipment.

Seven cross-border passageways have been discovered in the same area the past four years.

Story Date: April 11, 2014