Japan Just Built a $2.4 Billion Underground Temple to Swallow Floods

Japan's underground temple sits beneath a soccer field outside Tokyo, and when the rivers rise, it swallows them. Five shafts deep enough to hide a 20-story building feed a 6.3-kilometer tunnel, and four pumps driven by engines adapted from aircraft push out 200 cubic meters of water every second. When Typhoon Hagibis dropped more rain than the 1982 storm that flooded nearly 30,000 homes, only about 2,400 flooded. Subscribe for more of the engineering hiding under your feet. #technology #Future #Innovation #Explained #Infrastructure