SandBoxBlogs: CBS News "4 sophisticated drug tunnels found on border"

"(AP) TIJUANA, Mexico - Four drug smuggling tunnels equipped with lighting and ventilation — including one with a railcar system — have been discovered along the U.S.-Mexico border in less than a week, the latest signs that cartels are building sophisticated passages to escape heightened detection above ground.

Three of the tunnels were incomplete, including one that the Mexican army found in a Tijuana warehouse Thursday with more than 40 tons of marijuana at the entry. The passage extended nearly 400 yards, including more than 100 yards into the United States....."
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