In 2009, I interviewed a team of U.S. Border Patrol “Tunnel Rats” for the British Broadcasting Corporation. I also accompanied them on patrol in several underground passageways. The story aired on the BBC World Service program ‘Outlook.’ The original link on their website is no longer active.

Nogales, Ariz. – The DeConcini Port Of Entry is a busy place, but only part of the activity happens above ground.

Underneath the city lies a network of tunnels. Some are meant to drain rainwater, but others are meant for smuggling. They are hastily dug, sometimes have ventilation and electricity, and are very dangerous.


Listen to the story:


Smugglers enter tunnels on the Mexico side, cross the international border through the narrow passageways, and emerge on the U.S. side. They exit in houses, abandoned buildings, and even from manhole covers in busy parking lots.

This smuggling tunnel underneath Nogales Arizona had support beams. Some have ventilation and electric lights. (Photo courtesy of U.S. Border Patrol)

As the use of smuggling tunnels beneath the border has increased – from four in 2006 to 18 in 2009 – so has the U.S. Border Patrol’s response.

They now have their own patrol team, known as the Tunnel Rats, and spend hours crawling through wet, narrow passages.

The team starts at two large underground drainage systems that run between Nogales Ariz. and Nogales, Mexico. Their searches often lead to the discovery of smaller, illicit tunnels, bored through concrete and meant to deliver desperate humans instead of water.

Occasionally, the Tunnel Rats come face-to-face with smugglers.

That’s when the night vision goggles come in particularly handy.

Agent Michael Scioli met me at the Border Patrol’s large facility just outside of town, where we talked for awhile in a comfortable, air conditioned room. He told me the illegal shafts they’ve discovered have grown increasingly elaborate. Some have ventilation and electric lighting, while others are barely wide enough to crawl through a flashlight in your teeth.

It’s not a place for the claustrophobic.

Both Scioli and fellow tunnel rat Michael Pittman believe they are doing important work keeping weapons and drugs out of the tunnels, and out of the U.S. The tunnels also harbor dangerous men, and both Scioli and Pittman have had close calls.

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