The “Metropolitan Area Outer Underground Discharge Channel” is a flood control facility built in eastern Saitama Prefecture to reduce damage from inundation and flooding. The "Pressure-Adjustment Water Tank" with many huge pillars in the basement looks like an underground temple, and it is attracting attention on social media. In this article, we will show you the highlights of the Metropolitan Area Outer Underground Discharge Channel, plus the tour courses available.
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SAITAMA PREFECTURE
