Metropolitan Area Outer Underground Discharge Channel

Photo

by Dddeco at Japanese Wikipedia

/ CC BY-SA 3.0

The Metropolitan Area Outer Underground Discharge Channel, located in Kasukabe, Japan, is an impressive feat of engineering designed to mitigate flooding in the Greater Tokyo area. Completed in 2006, this massive underground infrastructure project features a series of enormous concrete silos and tunnels that can store and redirect excess water from heavy rainfall and typhoons. The facility's main attraction is the "Underground Temple," a vast, cathedral-like chamber supported by towering pillars.

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