Massive US-Mexico Tunnel Found

Sam Nobiensky brought to my attention last night (in our typical late night conversation) that the DEA found a massive tunnel (731m long) that went from warehouse-to-warehouse crossing the US-Mexico border going from Tijuana to Otay Mesa, California. I'm absolutely certain that someone was able to build this tunnel and use it for a while (there was two tons of the mary jane on the Mexico side) without the US government noticing. Wouldn't our heat mapping pick up a tunnel like this? It's amazing to think of what kind of tunnel could be out there that we haven't found yet. What do you think?

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Tags: US Mexico border,