Yubatake, Hot spring source in Kusatsu, Japan.
Yubatake is a natural hot spring source in the center of Kusatsu Onsen that continuously releases steaming mineral water. The flow moves through wooden channels that distribute it across the town, shaping how visitors move through the area.
The thermal springs of Kusatsu have operated continuously for more than 1,800 years, establishing the town as a leading wellness destination in Japan. This long history shaped how people built and organized the place around the water source.
The Netsunoyu facility showcases yumomi performances where people cool steaming water with wooden paddles in synchronized rhythms. This tradition has become woven into daily life and attracts visitors who come to watch the skill and timing involved.
Visit during off-peak times to see the spring with fewer crowds and better views of the steaming water and channels. The site sits within easy walking distance once you reach Kusatsu, making it simple to fit into your day.
The spring produces the highest water volume among Japanese hot springs and has highly acidic properties that naturally eliminate bacteria and microorganisms. This chemical quality makes the water particularly effective for bathing and has contributed to its reputation over the centuries.
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