The spring water is estimated to travel underground from Mount Kusatsu-Shirane before resurfacing at this location.
The spring produces approximately 30,000 tons of water daily.
The water temperature remains consistently near 11 to 12 degrees Celsius year-round.
It is officially designated as one of the '100 Famous Waters of Japan' due to its high water quality and historical significance to the local agriculture.
The surrounding landscape features unique moss formations that thrive in the constant humidity provided by the spring.
Hakoshima Yūsui is a renowned natural spring in Gunma Prefecture known for its exceptionally clear water, which emerges from the foot of a moss-covered cliff. It is recognized as one of the '100 Famous Waters of Japan' selected by the Ministry of the Environment. The water flows into a picturesque, crystal-clear pond surrounded by verdant forest, creating a distinctively calm environment. The site is characterized by the high volume of water discharge, which remains at a relatively stable temperature throughout the year. It serves as a local water source and a destination for those seeking a tranquil, nature-focused experience.
The wooden walkway providing a direct view of the mossy cliff where the spring water emerges.
Bring comfortable, non-slip walking shoes as the area near the water can be damp and slippery.
The spring is located in a rural area; confirm your route in advance as cellular signal may fluctuate.
There are no facilities on-site, so carry your own drinking water and remove all personal trash.
Do not attempt to wash vehicles or gear in the spring water, as it is a protected natural resource.
Stay on marked paths to protect the fragile moss and delicate ecosystem; do not swim in or pollute the spring water.
