Driving Hayama 2nd Tunnel through a cave
Hayama 2nd Tunnel is located in Takahashi City, Okayama Prefecture, Japan. It sits on Prefectural Road 300, northwest of Nariwacho Hayama, along the Shimaki River in the Wazan Gorge. It’s one of the few roads in the world that runs through a cave.
How Was the Hayama 2nd Tunnel Formed?
The tunnel was constructed through a limestone cave that was naturally formed by the Shimaki River. The cave was once much larger but was reduced as the river cut deeper. The tunnel uses only the entrance section of the cave, which is wide but low. The ceiling was artificially raised to allow vehicles to pass through.
What Are the Dimensions of the Tunnel?
The Hayama 2nd Tunnel is short and has a maximum height of 2.5 meters, making it unsuitable for large vehicles. The road is narrow, allowing only one vehicle to pass at a time. It is also unlit, requiring caution when traveling through it.
Is the Road Through the Cave Paved?
Yes, the road that runs through the Hayama 2nd Tunnel is fully paved. However, the narrowness of the road and the lack of lighting make it a challenging and somewhat dangerous route for drivers.
Why Was the Hayama 2nd Tunnel Built?
The tunnel was originally dug about 100 years ago to create a road through the natural cave. Manual labor was used for construction, and the walls still bear marks from chisels and pickaxes. The tunnel was designed to allow vehicles to pass, but it is restricted to smaller vehicles due to its size.
How Dangerous Is the Tunnel for Drivers?
The road and tunnel are narrow and designed for one vehicle at a time. Drivers must be cautious when passing through, as there is no lighting inside the tunnel. Drivers are also advised to honk before taking sharp turns. The road is not suitable for large vehicles like trucks.
How Can You Visit the Hayama 2nd Tunnel?
The Hayama 2nd Tunnel is located on a narrow rural road, with limited traffic. However, visitors should still be careful of other vehicles, especially on weekends when more tourists visit the tunnel. The northern tunnel entrance has space for one or two cars to park. It is recommended to explore on foot if you want to safely visit the area.