STORY: The subterranean passage is estimated to be 1,744 feet long, 61 feet deep and 4-feet in diameter. The tunnel had reinforced walls, a rail and ventilation system, and electricity.
The owner of the Mexican property where the tunnel was found told Reuters he was unaware of its existence.
"Nothing, nothing, nothing. And that's why I find it very strange that in 12 years I've never seen any (suspicious) movement. Nothing," said owner Javier Jimenez.
The underground passage was found during the course of a federal drug investigation. Authorities have charged six people for conspiring to distribute 1,762 pounds of cocaine.