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The Metropolitan Area Outer Underground Discharge Channel (Japanese: 首都圏外郭放水路, Hepburn: shutoken gaikaku hōsuiro), popularly known as G-Cans, is an underground water infrastructure project in Japan. It is the world's largest underground flood water diversion facility, built to…
The Metropolitan Area Outer Underground Discharge Channel (Japanese: 首都圏外郭放水路, Hepburn: shutoken gaikaku hōsuiro), popularly known as G-Cans, is an underground water infrastructure project in Japan. It is the world's largest underground flood water diversion facility, built to…
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