Hot Spring Water and Its Traditional Benefits
A Hot Spring Blessed with an Abundant Supply of Water
The source of Sarugakyo Onsen is classified as a calcium-sodium sulfate spring, a weakly alkaline, low-osmotic high-temperature spring. The water is colorless, clear, and pleasantly gentle on the skin.
The source temperature ranges from approximately 42°C to 58°C, and the area is blessed with an abundant supply of naturally hot spring water. The springs have flowed here for centuries, supplying numerous accommodations throughout the resort.
Traditional Indications
Hot spring bathing at Sarugakyo has traditionally been associated with relief from conditions such as neuralgia, muscle pain, joint pain, frozen shoulder, movement disorders, stiff joints, bruises, sprains, sensitivity to cold, fatigue, chronic skin conditions, burns, and arteriosclerosis.
The warm water provides a deeply relaxing sensation, and many visitors appreciate how long the warmth remains in the body after bathing.
History of Sarugakyo Onsen
A Hot Spring with Centuries of History and Folklore
Sarugakyo Onsen is traditionally said to have opened around 1615, the first year of the Genwa era. A local folk tale tells of a young couple who helped a hungry monkey. Later, when their child suffered severe burns, the hot spring water was said to have helped heal the child. This story is traditionally associated with the origin of both the place name and the hot spring.
There is also a tradition that Uesugi Kenshin, also known as Nagao Kagetora, crossed Mikuni Pass during the Warring States period and stayed in this area. The place name “Sarugakyo” can also be found in documents dating from the Eiroku era, demonstrating the area’s long history.
During the Edo period, Sarugakyo Checkpoint was established here as an important checkpoint along the Mikuni Kaido. The area became busy with travelers moving along this major transportation route.
The original hot spring area was located along the Akaya River. However, it was submerged following the completion of Aimata Dam in 1956. The hot spring resort was relocated to the present shores of Lake Akaya and was reborn as Sarugakyo Onsen in 1958.
The Hot Spring Town and Accommodations
Approximately 16 hotels and ryokan inns stand along the shores of Lake Akaya, while the number rises to around 40 accommodations when hot spring guesthouses are included.
Many accommodations offer rooms and open-air baths overlooking the lake, allowing guests to enjoy a peaceful stay surrounded by mountains, forests, and water.
For visitors who are not staying overnight, Mantenboshi no Yu is a popular day-use hot spring facility where guests can easily experience the waters of Sarugakyo. Some of the local accommodations also welcome visitors for day-use bathing.
Historic and Cultural Attractions
Sarugakyo Checkpoint Museum
Sarugakyo Checkpoint Museum stands on the site of the former checkpoint that controlled traffic along the Mikuni Kaido during the Edo period.
Part of the surviving official residence is open to visitors, providing an introduction to the role of the checkpoint and the lives of travelers who passed through the area.
Exhibits explain historical practices such as the inspection of “guns entering and women leaving Edo”, as well as the system of travel permits used during the Edo period.
Understanding the importance of the Mikuni Kaido as a transportation route provides valuable insight into how Sarugakyo Onsen developed.
House of Folktales and Kamishibai
Sarugakyo has preserved numerous folk tales that have been passed down through generations. At the House of Folktales and Kamishibai, visitors can enjoy selected stories from more than 500 local folk tales through storytelling and traditional kamishibai picture shows.
The warm and nostalgic style of storytelling appeals to both children and adults. After relaxing in the hot springs, spending time in the world of traditional Japanese folktales offers a memorable cultural experience unique to Sarugakyo.
Dendekoza Mikunikan Theater
Dendekoza Mikunikan is a traditional-style theater where visitors can enjoy popular Japanese stage performances.
Programs include human-interest dramas, period plays, and song shows. The intimate atmosphere, in which performers and audiences interact closely, creates a warm and welcoming experience.
The theater provides a valuable opportunity to experience a form of traditional popular entertainment that has long been part of Japanese culture.
Mikuniji and Yosano Akiko Travel Literature Museum
The renowned poet Yosano Akiko visited Gunma Prefecture many times. This museum introduces her travels through the region by displaying her poems, writings, and related materials.
Exploring Akiko’s literary journey provides another way to discover the landscapes and culture of the Minakami area.
Ogansho Pilgrimage and Akaya Seven Lucky Gods Pilgrimage
Sarugakyo has preserved a traditional custom known as “Ogansho-kake,” a form of prayer or petition for one’s wishes to come true.
The Ogansho Pilgrimage is a walking route that visits stone Jizo statues and historic sites scattered along the former highway. It offers a simple and intimate way to encounter the local traditions of faith.
The Akaya Seven Lucky Gods Pilgrimage runs from Ebisu Tenjin Shrine to Benzaiten Shrine. The approximately 7.7-kilometer route allows visitors to enjoy a leisurely walk while experiencing the surrounding natural scenery.
Nature and Outdoor Attractions
Aimata Dam
Aimata Dam created Lake Akaya and is an impressive destination in its own right. The enormous dam structure and the sight of water being released demonstrate the power of modern civil engineering.
The dam is also an important part of the history of the region, as its construction created the lake and led to the relocation and redevelopment of Sarugakyo Onsen along the present lakeshore.
Lake Akaya and Akaya Lake Memorial Park
Lake Akaya is an artificial lake created by the completion of Aimata Dam and has become one of the defining landscapes of Sarugakyo Onsen.
The reflections of Mount Mikuni and the Tanigawa Mountain Range on the lake change dramatically with the seasons. Fresh greenery appears in spring, deep blue water and lush foliage characterize summer, brilliant autumn colors surround the lake in fall, and snow transforms the landscape in winter.
Akaya Lake Memorial Park, located along the lakeshore, features open grassy areas and viewpoints, making it a pleasant place for walking and picnicking.
Fishing is also possible, with species such as wakasagi smelt and Japanese yamame trout found in the area. The lake offers many opportunities to enjoy nature at a relaxed pace.
Suwakyo Gorge
Suwakyo Gorge is a beautiful valley characterized by unusual rocks and steep rocky formations. Walking paths have been developed through the gorge, allowing visitors to enjoy the scenery at close range.
The gorge is particularly well known for its autumn foliage, but its natural beauty can be appreciated in every season.
Takumi no Sato
Takumi no Sato is a hands-on tourism area where traditional rural landscapes have been preserved. Visitors can participate in a variety of craft experiences, including pottery and Japanese washi paper making.
Walking through the area while discovering traditional crafts and satoyama culture offers a glimpse into the everyday life of rural Japan.
Yushima Auto Campground
Yushima Auto Campground is surrounded by abundant nature and offers opportunities for fishing, playing in the river, birdwatching, and other outdoor activities.
Spending a night beneath a clear sky filled with stars and surrounded by fresh mountain air is an especially memorable experience. The opportunity to combine hot spring bathing with outdoor recreation is one of Sarugakyo’s distinctive attractions.
Outdoor Adventures
The wider Minakami area offers numerous outdoor activities, including rafting, canyoning, and paragliding.
These activities allow visitors to experience the area’s mountains, rivers, forests, and valleys in an active and exhilarating way.
Access
By train and bus: From Jomokogen Station on the Joetsu Shinkansen or Gokan Station on the JR Joetsu Line, take a Kan-etsu Kotsu bus. The journey takes approximately 30 minutes.
By car: Approximately 25 minutes from the Tsukiyono IC on the Kan-etsu Expressway via National Route 17.
A Hot Spring Destination to Enjoy in Every Season
Sarugakyo Onsen offers something different throughout the year. Spring brings flowers and fresh greenery, summer is ideal for activities on and around the lake, autumn transforms the mountains with colorful foliage, and winter creates a peaceful snowy landscape.
The resort is also conveniently located for visiting other attractions, including Mount Tanigawa, Minakami Onsen-kyo, and the Naeba area, making Sarugakyo an excellent base for exploring the wider mountain region.
With its combination of history, legends, nature, culture, and hot springs, Sarugakyo Onsen offers much more than a place to bathe. Visitors can relax in the healing waters, explore historic sites, enjoy outdoor activities, and discover the stories that have shaped this mountain community.
For travelers looking to experience a quieter side of Japan surrounded by mountains and a beautiful lakeside landscape, Sarugakyo Onsen provides a memorable destination throughout the year.