Kiyotsu Gorge Tunnel

After an incident involving falling rocks in 1988, the Kiyotsu Gorge valley was closed to the public. The Kiyotsu Gorge Tunnel was opened in October 1996 to make it possible for visitors to enjoy the magnificent natural beauty of the area in a safer and more secure way.

The tunnel is 750 meters long in total. From the three viewing locations along the tunnel as well as the Panorama Station at its end, visitors can take in the fantastic beauty of the gorge. There are also delightful exhibits throughout the tunnel for visitors to enjoy which provide information on the gorge’s seasons, plant and animal life, and how it came to be formed.


Building the Kiyotsu Gorge Tunnel

ⅤA trail following the Kiyotsu River from Kiyotsukyo Onsen passing through Yagisawa made it possible for visitors to enter and travel through the gorge, but avalanches and lingering snows would block it in early spring, and large and small falling rocks as well as landslides were frequent occurrences, making the path extremely dangerous.

In July 1988, falling rocks struck a man on the head, resulting in his death.
Thereafter, it was determined that safe passage could not be guaranteed to visitors and usage of the trail, and consequently entry into the gorge, was prohibited without exception.
Accordingly, it became impossible to enter the depths of the gorge from the hot spring district and see the sheer cliffs found there, which boast the most spectacular and beautiful columnar jointing in the gorge.

Many locals and visiting tourists requested that it be made possible for them to view the gorge’s beauty,
and the Environment Agency (in charge of National Parks), the Agency for Cultural Affairs (in charge of Natural Monuments), the Niigata Prefectural government, Nakasato Village (now a part of Tokamachi City), and other relevant agencies began investing the matter.

The following determinations were made:

  • Reopening the closed trail was not a possibility.
  • The collapse-prone rock walls made the creation of a safe trail extremely difficult.
  • The construction of a large-scale artificial structure which would damage scenic views would not be permitted in a National Park.
  • The purpose of Japan’s National Parks is for them to be used by residents as widely as possible, and, as the gorge was also a tourism resource, leaving things as they were was not an option.
  • Based on the above, the decision was made to build a pedestrian tunnel in place of the old trail to provide safe passage without damaging the gorge’s scenery.
    Subsidiary aid was provided by Niigata Prefecture, and Nakasato Village served as the implementing body. Total construct costs came to approximately two billion yen. Construction began in 1992 and the tunnel was opened on October 1, 1996.

For the first time in eight years, people were again able to see the gorge’s beauty, albeit only a part of it. The trailalong the river remains closed to this day.

There is now, however a mountain trail which leads to the gorge as well. Although there have been some complaints that things are not as exciting as when the original trail was open, and that the tunnel is long with few viewing locations, the tunnel makes it possible for visitors to safely enjoy the gorge without worrying about what’s above (the weather and falling rocks), or what’s below (steps, uneven terrain, etc.).

The tunnel is also open to stroller and wheelchair users. Because of these reasons, the tunnel has been particularly praised by group tour operators and families with small children or senior members, etc. who are not able to walk a rough nature trail. In addition, people are beginning to realize that, thanks to the tunnel, this is one of only a very few places where you can easily enjoy deep mountain snowscapes in the middle of winter.

Hours of Operation



Tunnel hours



Tunnel fee


Adults (16+) ¥600

Children (6-15) ¥300

Children under 5 and persons with a physical disability Free

  • ※ A discount of 50 yen/person is available to groups of more than 20 people.