Tunnel Talk Videos Gigantic Space-Age Drill Invades Seattle's Underground August 19, 2013 http://www.latimes.com/nation/la-na-adv-seattle-drill-20130819,0,7461902.storyLargest tunnel-drilling device in the world. ← Life of Pi Meets National Geographic in Macklemore VideLA Might Build a Bullet Train. That goes 700 mph. Through a mail tube. →