#12 of the images Cold Season Exclusive: Explore Kannana Underground’s ‘Regulating Pond’ and Flood Protection Tunnel | FRIDAY DIGITAL

The control room manages the intake gates for the Myoshoji, Zempukuji, and Kanda Rivers. When a warning is issued due to heavy rain or a typhoon, a two-person system monitors the gates.

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Cold Season Exclusive: Explore Kannana Underground’s ‘Regulating Pond’ and Flood Protection Tunnel

12/18

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