The Metropolitan Area Outer Underground Discharge Channel

Beneath a spacious plaza in Kasukabe, there is a massive space that is commonly referred to as the “Subterranean Shrine.” The facility is part of the Metropolitan Area Outer Underground Discharge Channel, which was completed in 2006. This underground infrasystem was created to minimize flood damage in areas with a high risk of disaster that were newly developed in conjunction with urban expansion. The unfathomable scale of the surge tank, which is normally open to the public, has led to the site’s enduring popularity. It also performs a valuable service by raising awareness about disaster prevention.