Experience the beauty of crystal-clear water springing from the Kuju mountain range. Savor the smooth, soft water selected as one of Japan's 100 best waters.
Scenic Views
Historic Sites
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Highlights
Crystal-clear spring water selected as one of Japan's 100 best waters
Smooth, soft water rich in minerals
Walking trails through a primeval forest
Beautiful scenery with the majestic Kuju mountain range as a backdrop
By car, it's about 20 minutes from Yufu IC on the Oita Expressway. By public transportation, it's about a 30-minute bus ride from Yufu Station on the JR Kyudai Main Line. Show route
Op.Hours
24 hours a day
Cld.Days
Open every day
Fee
Free
INFO
Parking is free. Restrooms are available nearby. If you wish to take drinking water with you, please bring your own container.
Otoike Spring Group is a group of springs located in Asono, Shoain-machi, Yufu City, Oita Prefecture. Emerging from Otoike Pond (elevation 850m) on the north side of Kurodake mountain (elevation 1,586m) on the eastern foothills of the Kuju mountain range, it is one of the sources of the Aso-no River in the Oita River system. Groundwater from Kurodake takes months, or even over a year, to percolate through the layers of earth before emerging, resulting in water containing a moderate amount of minerals such as calcium. It also contains trace amounts of carbon dioxide, giving it its characteristic smooth, soft taste. It has long been used locally for drinking and irrigation, and is now also sold as bottled mineral water. Otoike Spring Group is located within the Aso-Kuju National Park, and walking trails are available in the surrounding area. Approximately 2km east of Otoike Spring Group is Shirasu-kousen, known for its natural carbonated water. When visiting Otoike Spring Group, we recommend taking a stroll along the trails to enjoy the abundant nature and clear water, tasting the spring water, and appreciating the surrounding scenery. The beautiful views, with the majestic Kuju mountain range as a backdrop, will surely soothe your soul.
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