Oshino Hakkai

Oshino Hakkai stands as a monumental natural sanctuary in the Fuji Five Lakes region, serving as a vital cultural anchor and a designated National Natural Treasure.
The site is topographically defined by eight spring-fed ponds that are the result of snowmelt from Mount Fuji filtering through porous layers of volcanic rock for over eighty years. This natural filtration process creates an authoritative level of water clarity, allowing visitors to see deep into the aquatic ecosystems of the basins. The layout of the area preserves the atmosphere of a traditional farming village, with thatched-roof buildings and waterwheels set against the backdrop of the mountain. Historically, these ponds served as a sacred site for pilgrims to perform purification rituals before beginning their ascent of Mount Fuji.

The area features the Sokonashi-ike, which according to local legend is connected to a subterranean cave system, and the Deguchi-ike, the largest and most distant of the eight springs. Visitors can explore the Hannoki Bayashi Shiryokan, a small open-air museum that offers an elevated viewing platform for panoramic vistas of the ponds and Mount Fuji. There are numerous opportunities to sample local delicacies made with the spring water, such as handmade soba noodles and toasted mugwort rice cakes. A specialized area is also available where visitors can drink the chilled Fuji spring water directly from a source.

The significance of the area lies in its status as part of the Mount Fuji World Heritage site. The environment is characterized by a polished sense of serenity, though it remains a popular destination for those seeking the classic Japanese rural aesthetic. This atmosphere is most visually compelling on clear days when the reflection of the mountain is visible on the surface of the water. It remains a premiere destination for those seeking to understand the spiritual and geological connection between the local community and the sacred peak.