We visited the world’s largest Storm Water Discharge Tunnel which prevents flooding disasters. A giant tunnel connects many small rivers with Edo River, Tokyo’s major river, helping to reduce a potential overflow into residential areas during major storms. The tunnel was HUGE! It is also know as Underground Temple.
http://en.wikipedia.org/wiki/Metropolitan_Area_Outer_Underground_Discharge_Channel
http://www.ktr.mlit.go.jp/edogawa/project/gaikaku/frame_index.html
Be First to Comment