8/5/15 Business Insider
The tunnel is roughly 19 feet deep, 5.5 feet high, and over 400 feet long, and it bears all the signs of the famously subterranean Sinaloa cartel and its leader, “Lord of the Soil” Joaquin “El Chapo” Guzmán. According to Spanish newspaper El País, the tunnel was discovered by Mexico authorities on June 30, but details were only released on Sunday. No arrests have been made.
The entrance on the Mexican side was located in a warehouse emblazoned with the name Importadora y Exportadora Hega, a company about which internet searches turned up little. (According to El País, googling the company shows that it does cemetery construction.) The passageway, which had not been completed, connected the US and Mexico at a point near the busy border crossing at Garita de San Ysidro, near the city of Tijuana and across the border from San Diego.
The tunnel had light fixtures as well as rail track. Though its exact purpose and designers remain unknown, it is suspected that it was built to smuggle drugs.