Watch: 1200 workers convert above-ground train line in Tokyo to subway line in one night

From one of my favorite blogs, Nag on the Lake, a post about how workers in Tokyo moved section of train line underground in the course of an evening in 2013.

When the Shibuya Station Toyoko Line above-ground train shut down for good it was replaced with a new section of subway track connecting Shibuya Station and the nearby Daikanyama Station. The conversion of the line from above-ground to underground required 1,200 engineers and countless man-hours.

But this mammoth construction was virtually unnoticeable, because it all occurred during the train line's off-hours" over the course of one single night.

Image: Youtube screenshot