About this episode
In May of 1990, law enforcement raided a warehouse in Douglas, AZ and a private home across the border in Agua Prieta, Mexico. Connecting the two buildings, they found a tunnel, more sophisticated than anything anyone had seen before. The tunnel in Douglas became a kind of prototype for many tunnels afterwards and a hallmark of the Sinaloa Cartel. The Tunnel Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early. Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus . Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.