Nakayama Zuido, Tunnel in Niigata Prefecture, Japan
Nakayama Zuido is a tunnel in Niigata Prefecture, Japan. It runs through a hilly area, with a simple concrete portal and a straight passage that is lit inside.
The tunnel was built in the mid-20th century to improve local access. It has since been maintained with minor repairs, keeping its original shape.
Local people use the tunnel as a daily route, and its name comes from the Nakayama area it passes through. The walls show marks from years of use, and the passage feels like a simple link between two sides of the valley.
The tunnel is narrow, so walk close to the side wall and stay alert for vehicles. Lighting is limited during the day, so carry a small light if you are on foot.
The tunnel is short enough that you can see the exit from the entrance. Its walls have a rough texture that shows the marks of the tools used to dig it.
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