The Seasonal Beauty of Tsubakiyama Dam Lake
Tsubakiyama Dam is a multipurpose dam constructed to help control the Hidakagawa River, generate electricity, and provide water for agriculture. Completed in 1989, it has one of the largest reservoir capacities in Wakayama Prefecture and plays an important role in supporting local communities.
The beauty of the surrounding landscape has also earned Tsubakiyama Dam Lake a place among Japan’s selected “100 Beautiful Dam Lakes.” The magnificent mountains of the Kii Mountain Range surround the reservoir, creating a spectacular natural setting throughout the year.
In spring, visitors can enjoy cherry blossoms and fresh green foliage. Azaleas and hydrangeas add color in early summer, while summer brings blooming mountain lilies. In autumn, the mountains are transformed by brilliant red, orange, and yellow foliage.
The autumn season is particularly popular because the colorful trees are reflected on the calm surface of the lake. Photographers and nature lovers frequently visit during this period to capture the changing colors of the mountains and water.
The Hidakagawa River itself is a clear mountain river originating near Mount Gomadan, the highest peak in Wakayama Prefecture. The river is known for freshwater fishing, including ayu and amago trout, while fireflies can also be seen in some areas along the river during the appropriate season. Together, these natural features create a region rich in wildlife and outdoor experiences.
Japan’s “Most Fun” Echo Point
Crossing Tsubakiyama Lake Bridge leads to Green Park Tsubakiyama, home to a famous echo point known as one of the most entertaining places in Japan to experience a mountain echo.
Stand at the designated point and shout “Yahho!” toward the mountains. A remarkably clear echo returns from the mountains across the lake. According to local tradition, a short call such as “Yaho!” produces a particularly clear response.
Visitors are encouraged to shout as loudly as they like, whether calling out “Yahho!” or simply expressing a wish or thought. The experience is a fun way to release stress and reconnect with nature.
The unique echo point has been featured on Japanese television programs and has become well known throughout the country. An annual “Yahho All-Japan Championship” is also held here, attracting participants from around Japan.
The competition is not based solely on the quality of the echo. Participants are also judged on elements such as their performance and what they choose to shout, making it a particularly unusual and entertaining local event.
Highlights of Green Park Tsubakiyama
Green Park Tsubakiyama features observation points and walking trails overlooking Tsubakiyama Dam Lake. The quiet lakeside environment is ideal for taking a leisurely walk and enjoying the scenery.
The landscape is especially beautiful in the early morning and evening, when sunlight reflects across the surface of the lake and creates an atmospheric scene. Several echo points can be found on the peninsula reached by crossing the suspension bridge, each offering a slightly different acoustic experience.
Walking through the greenery while listening to birds, flowing water, and the sounds of the surrounding mountains is a peaceful way to escape the pace of everyday life.
Refresh Area Miyama-no-Sato
The area around Tsubakiyama Dam Lake is also home to Refresh Area Miyama-no-Sato, a large leisure complex where visitors can enjoy nature, sports, hot springs, and accommodation.
The extensive grounds include sports facilities, a forest park, and lodging facilities. The area is popular with a wide range of visitors, from families looking for an outdoor adventure to travelers who simply want to relax in the mountains.
Japan’s Longest Wisteria Trellis Trail
One of the highlights of Miyama-no-Sato Forest Park is the spectacular Wisteria Trellis Road, which stretches for approximately 1,646 meters. It is known as one of Japan’s longest wisteria-covered walkways.
From around mid-April to early May, purple and white wisteria flowers bloom overhead, creating a magnificent natural tunnel. Visitors can stroll beneath the flowers while enjoying their delicate fragrance.
An observation point can be reached via a set of approximately 96 meters of elevation gain known as the “health stairs.” From the top, visitors can look down over the long wisteria trail while also enjoying a panoramic view of Tsubakiyama Dam Lake.
A gentler mountain path is also available, making it easier for families with young children and older visitors to enjoy the flowers. The park also includes an athletic playground and a Mystery House, providing plenty of entertainment for families spending a full day in the area.
Relax at Miyama Onsen Aitokusou
After exploring the natural attractions, visitors can relax at Miyama Onsen Aitokusou, a hot spring inn located beside Tsubakiyama Dam Lake. Its calm exterior, inspired by traditional Japanese samurai residences, blends beautifully with the surrounding mountain landscape.
The hot spring is a sodium hydrogen carbonate spring known for its gentle, smooth bathing experience. The water has traditionally been appreciated for its refreshing effect on the skin and is enjoyed by visitors seeking relaxation after outdoor activities.
The inn also serves dishes made with local ingredients. Regional specialties such as grilled ayu and botan-nabe, a wild boar hot pot, allow guests to experience the flavors of the mountain countryside.
Log cabin-style accommodation is also available, making the area suitable for families and groups. At night, visitors can step outside and enjoy the star-filled sky far from the lights and noise of large cities.
Discover History and Tradition at Kamiatagi Shrine
Another attraction near Tsubakiyama Dam is the historic Kamiatagi Shrine. The shrine is traditionally believed to have been founded as early as the Heian period, and its grounds are surrounded by enormous cedar and cypress trees estimated to be more than 450 years old.
The towering trees create a mysterious and peaceful atmosphere, making the shrine an excellent place to experience the spiritual character of rural Japan.
Every April, the shrine hosts a spring festival known as the Hanamatsuri. Beautiful flower banners are displayed and elegant children’s dances are performed as offerings to the deities.
The festival has traditionally been described as an exceptionally prestigious celebration, said to have no equal south of Kyoto. Today, it remains an important event for preserving the cultural traditions of the local community.
A Relaxing Journey Through the Nature of Hidakagawa
The area around Tsubakiyama Lake Bridge offers a remarkable combination of mountain scenery, outdoor recreation, traditional culture, and relaxation. Visitors can cross the dramatic suspension bridge, call out to the mountains at the famous echo point, walk beneath blooming wisteria, and unwind in a peaceful hot spring.
The scenery around Tsubakiyama Dam Lake changes dramatically with the seasons, making it a destination worth visiting more than once. Spring flowers, summer greenery, autumn foliage, and winter landscapes each reveal a different side of this beautiful mountain region.
For travelers looking to experience a quieter side of Wakayama away from the major tourist centers, Tsubakiyama Lake Bridge and the surrounding attractions of Hidakagawa Town offer an enjoyable combination of nature, adventure, traditional culture, and hospitality.
Take a leisurely walk across the lake, listen to your voice echo through the mountains, explore the forests and flowers, and finish the day in a warm hot spring. This is a wonderful way to slow down and experience the peaceful natural beauty of Wakayama’s Kii Mountain region.