The andesitic land made by volcanic activities of 3mn to 2.6mn years ago upthrusted to form Mt. Hachibuse and many waterfalls including Niiyahattan Falls were created on sheer cliffs of the mountain. From late April, rhododendron starts to bear faint pink flowers around the Niiyahattan Falls. Also, native trees of walnut, chestnut, northern Japanese magnolia, etc. come into bud and mountain vegetables such as bracken, osmund, and udo grow thickly. The water falling down from heights of about 32m is spectacular. Visitors often see a rainbow created by misty water around the waterfall basin. Autumn colors of maple leaves feast visitors’ eyes. In winter, the waterfall entirely freezes to be an art object of ice.