Kanda River Underground Regulating Reservoir
![](https://i0.wp.com/ten-years-in.tokyo/wp-content/uploads/2019/10/21-Tunnel-garbage.jpg?fit=768%2C576&ssl=1)
We have been always aware of the danger of living near a river but Typhoon no. 19 that happened 2 weeks ago triggered my interest to visit this flood prevention system. We did a quick google check and realised that…