A Dramatic Landscape Shaped by Nature
The extraordinary landscape of Nezame-no-Toko was created over countless years as the waters of the Kiso River gradually eroded the granite bedrock. The area was once a powerful stretch of rapids, but after the Kiso Dam, operated by Kansai Electric Power, began operation upstream in 1968, the water level fell. Rock surfaces that had long remained beneath the river gradually became exposed, revealing the remarkable landscape seen today.
The exposed granite features distinctive cracks known as sheet joints, forming striking geometric patterns across the rocks. Some of the rock terraces rise several meters above one another, with the highest section reaching approximately 20 meters above the riverbed.
It is believed that the exposed rock formations date back around 12,000 years. The unusual shapes seen today are therefore the result of an exceptionally long relationship between flowing water and solid granite.
Restoring the River and Its Living Environment
The area around Nezame-no-Toko once suffered from deteriorating water quality, including the effects of household wastewater. In 1987, a committee was established to address water-resource and environmental issues, leading to improvements in the river environment.
Following discussions with Kansai Electric Power, controlled water releases were introduced, with approximately 2.7 tons of water per second in summer and 2.0 tons per second in winter. Ayu sweetfish releases also resumed the following year, helping restore a healthier relationship between the river, its wildlife, and the surrounding communities.
A Landscape Celebrated in Japanese Literature
Nezame-no-Toko has long attracted poets, writers, and travelers, and its beauty has been preserved in numerous poems and literary works. The fourth verse of “Shinano no Kuni,” the official song of Nagano Prefecture, refers to Nezame-no-Toko as a resting place for travelers, reflecting its longstanding role as a place where people could pause and enjoy the scenery.
Many poets and haiku masters who traveled along the Nakasendo also left poems inspired by the landscape. The gorge is therefore more than a natural attraction; it is also part of the literary heritage of the Kiso region.
Urashima-do and the Legend of Nezame-no-Toko
At the center of Nezame-no-Toko stands a small shrine-like structure known as Urashima-do. It is said that a statue of Benzaiten, the Buddhist goddess associated with music, wisdom, and good fortune, was once enshrined here.
The origin of the shrine is closely connected with the legend of Urashima Taro, the famous Japanese folk hero who traveled to the Dragon Palace beneath the sea. The history of Rinsenji Temple in Agematsu also preserves traditions connecting Benzaiten with this legendary story.
The Legend of Urashima Taro
According to the Nezame Urashima-dera Ryaku Engi, Urashima Taro returned from the Dragon Palace carrying a jeweled box and a statue of Benzaiten. Enchanted by the beautiful scenery along the Kiso River, he settled in the area and spent his later years fishing and selling a miraculous medicine.
One day, while telling local villagers about the Dragon Palace, Urashima Taro opened the jeweled box. He immediately became an old man with white hair. According to the legend, he disappeared from this place in 938.
The story is also said to be connected with the name “Nezame-no-Toko,” which can be associated with the idea of a place whose beauty is so striking that it awakens the senses.
The Legend of the Three-Times-Rejuvenated Old Man
Another traditional story associated with Nezame-no-Toko is the legend of the “Mikaeri no Okina,” or Old Man Who Turned Young Three Times. He was said to have been a remarkably long-lived man who gave a miraculous medicine to local people and rejuvenated himself three times.
He is sometimes identified with Urashima Taro, linking the two traditions together. During the late Muromachi period, the Noh play “Nezame” was created based on this legend, helping preserve the story through generations.
Access and Enjoying the Scenery
Nezame-no-Toko is conveniently located along National Route 19 and is easy to visit by car. Visitors can use the Agematsu Town parking area or nearby roadside facilities.
By train, the site is approximately 2 kilometers south of JR Agematsu Station, about a 25-minute walk. Travelers riding the limited express Shinano may even hear an onboard announcement introducing Nezame-no-Toko as the train passes the scenic area, offering a glimpse of the famous gorge from the window.
Nearby Attractions
The surrounding area offers several attractions where visitors can combine nature and culture. These include the Kiso Road Museum of Art and Nezame-no-Toko Nature and Art Park.
The sound of the clear Kiso River, the surrounding mountains, and trains traveling along the railway near National Route 19 create a peaceful atmosphere that captures the character of the Kiso Valley.
A Place Where Nature and Legend Meet
Nezame-no-Toko is a remarkable scenic destination where enormous granite formations and clear mountain water come together in a landscape shaped over thousands of years. At the same time, the legends of Urashima Taro and the Three-Times-Rejuvenated Old Man give the scenery an air of mystery and imagination.
Surrounded by the mountains of Kiso, the gorge has a timeless atmosphere in which nature, history, literature, and folklore seem to coexist. Its appearance changes with the seasons, offering fresh scenery throughout the year.
For travelers exploring the historic Kiso Road, a visit to Nezame-no-Toko is an opportunity to experience both the immense power of nature and the fascinating legends that have been passed down through generations.