This looks like the set of the latest sci-fi film when in fact it’s the new flood control works protecting Tokyo district in Japan. The badly auto-translated text from the site reads:

The national capital region contour sluice may overflow takes in the flood of the small-to-medium-sized rivers which become to the underground, lets flow to Edogawa through the tunnel of the entire extended 6.3㎞ which penetrates underground 50m, it is the worldwide biggest flood prevention facility. …

The ground nadir tunnel of the diameter 10m which it runs including 5 these enormous shafts which reach to diameter 30m and the depth 60m which take in the flood, the earth to be deep over 6.3km, the pillar which is 500 tons of weight it is, the scale where such as the mammoth tank where also 59 rise the everything of that exceeds the imagination, and 14000 horsepower turbines which per second drain the water of 200t.

　The national capital region contour sluice which bears the role of the city making which is strong in the flood, supports the safety of the capital city & Tokyo as a power having under the edge literally.

The scale is huge, these works are 50 to 60 metres down and the tech looks great.

Link

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