The Natural Setting of Yonoike Pond
A Highland Pond on the Slopes of Mt. Utsukushigahara
Yonoike lies in the Nonnoiri area of Wada on the eastern slopes of the Utsukushigahara Highlands, a region known for its rich natural environment. At approximately 990 meters above sea level, the pond covers about 0.9 hectares and has a circumference of roughly 1 kilometer.
The pond reaches a maximum depth of approximately 4 meters. Spring water and small mountain streams continually flow into it, helping maintain a relatively stable supply of clear water throughout the year.
How Yonoike Pond Was Formed
The Legend of a Pond Born in One Night
The origin of the pond is closely connected with its name. According to local tradition, during a rainy night in the early summer, a large landslide occurred halfway up Ikashiriyama. Water accumulated in the depression left by the landslide, and a pond was said to have formed overnight.
This dramatic story is believed to have given rise to the names Yonoike, meaning “Night Pond,” and Hitoyoike, meaning “One-Night Pond.” Whether understood as a geological event or a traditional legend, the story reflects the powerful presence of nature in this mountain region.
A Pond Connected to Local Life
Yonoike is not simply a scenic pond. Its water has long been an important resource for the surrounding community. Fish such as Japanese char can be found in its clear waters, while the pond’s water has historically been used for agricultural purposes.
In 1940, improvements were made to the pond as part of efforts to increase food production. Before modern water-supply systems were established, the water was also used locally as a source of drinking water. The pond therefore represents an enduring connection between the natural environment and everyday life in the mountains.
Legends Surrounding Yonoike Pond
A Mysterious Pond Created by Nature
The story that Yonoike suddenly appeared following a landslide has been passed down through generations. The idea of a pond being created overnight gave the site an almost supernatural character and helped foster a sense of awe and respect for the surrounding landscape.
The Legend of the Kappa
An even more unusual story appears in an Edo-period document known as the “Shinano Province Tateshina Mountain Brief Chronicle”. According to this tradition, Yonoike was created overnight by a kappa, a mythical creature associated with rivers and ponds in Japanese folklore.
The kappa was said to have originally lived in Akanuma Pond along the road over Amagaike Pass. It reportedly played tricks on travelers passing through the area, frightening or deceiving them.
One day, however, a samurai named Suwa Yorito defeated the kappa and drove it away from Akanuma Pond. Searching for a new home, the kappa eventually arrived in what is now Nagawa Town. According to the legend, it created Yonoike in a single night and made the new pond its dwelling.
The story continues with Akanuma Pond. After the kappa departed, the pond supposedly dried up because its supernatural power had disappeared. The site is now associated with Lake Megami. Although this is clearly a folktale rather than a historical account, the story adds another fascinating layer to the cultural landscape of the Central Highlands.
A Peaceful Place for Walking and Nature
Quiet Scenery Through the Seasons
The area surrounding Yonoike offers a peaceful setting for a leisurely walk. The small island floating on the surface, the gentle movement of water, and the mountains surrounding the pond create a tranquil landscape far removed from the noise of urban areas.
The scenery changes with the seasons, making the pond an appealing destination for travelers who enjoy quiet natural environments. Forests and mountain vegetation provide a particularly atmospheric backdrop, while the calm surface of the water reflects the surrounding landscape.
Points of Interest Around the Pond
The Stream Feeding the Pond: Clear mountain water flows into Yonoike from the surrounding hills, helping sustain the pond throughout the year.
The Small Island: A small island rises from the surface of the pond and has become one of its most distinctive visual features.
The Water Outlet: The outlet through which water leaves the pond provides a visible reminder of its historic role as a source of agricultural water and the close relationship between the pond and local communities.
How to Visit Yonoike Pond
By Public Transportation
From Ueda Station on the JR Hokuriku Shinkansen, visitors can take a local bus to the Yonoike bus stop. The journey takes approximately 88 minutes, followed by a walk of about 3 minutes from the bus stop to the pond.
By Car
Yonoike is approximately 30 kilometers, or about 35 minutes by car, from the Okaya Interchange on the Nagano Expressway. From the Tobu-Yunomaru Interchange on the Joshin-etsu Expressway, the distance is approximately 33 kilometers, or about 45 minutes.
A small parking area with space for approximately three standard cars is available near the site.
A Quiet Encounter with Nature and Folklore
Yonoike Pond is a special place where the natural landscape of Nagawa Town meets stories handed down through generations. Its quiet waters, mountain surroundings, and unusual legends create an atmosphere quite different from the better-known tourist destinations of Nagano.
The story of a pond appearing in a single night, together with the colorful kappa legend, gives visitors a glimpse into the way local people have interpreted and passed down the mysteries of their natural surroundings.
For travelers interested in nature, Japanese folklore, local history, and peaceful mountain scenery, Yonoike offers a rewarding detour. Take a quiet walk beside the water, look out across the small island and surrounding mountains, and imagine the stories that have been told here for generations. Away from the bustle of the cities, this secluded pond offers a chance to experience a quieter and more mysterious side of the Nagano countryside.