"I would say a normal tunnel will run anywhere from — depending on the length and complexity — anywhere from $1 to maybe $3 million," Vigil said. "And the fact of the matter is that once you run one or two loads that tunnel is paid for. You've paid for the tunnel. So is it worth it to them? Without question."
One of 26 bundles of marijuana, found inside a drug-smuggling tunnel from Mexico that was uncovered by the US Border Patrol in Nogales, Arizona, is shown in this photograph released on November 22, 2011. The tunnel was 319 feet long and extended 219 feet into the US and 100 feet into Mexico. It was approximately 20 feet below the surface and measures 3 feet wide by 2 feet tall. While securing the tunnel, Nogales Border Patrol agents found 26 bundles of marijuana weighing more than 430 pounds and worth approximately $215,000.