The waterfall is fed by the Norikura volcano, which last erupted approximately 9,000 years ago.
In February, the waterfall is illuminated at night during a localized winter light festival.
The base of the trail features a dedicated foot bath (ashiyu) utilizing local hot spring water.
The name 'Hirayu' is derived from a legend about a white monkey that led injured samurai to the nearby healing thermal waters.
Hirayu Waterfall is a 64-meter tall, 6-meter wide cascade located in the Okuhida region of Gifu Prefecture. It is officially designated as one of Japan's Top 100 Waterfalls by the Ministry of the Environment. The waterfall originates from the melting snow of the Norikura mountain range. A walking trail connects the main parking area to the base of the falls, involving a moderate incline. During winter, the waterfall freezes completely, forming a massive vertical ice pillar. The surrounding forest consists primarily of deciduous trees, which turn vibrant colors in autumn.
The viewing platform located at the end of the forest trail provides an unobstructed perspective of the full drop.
Wear sturdy, non-slip hiking boots as the trail can be damp and uneven.
Carry trekking poles if visiting in spring or autumn when the path may be muddy.
Bring a light jacket even in summer, as the temperature drops significantly near the waterfall mist.
Do not attempt the hike in standard street shoes or flip-flops, as the path contains loose gravel and steep sections.
The access trail may be closed during heavy winter snowfall or extreme weather conditions; check local conditions in the Hirayu Onsen visitor center before hiking.
Stay on marked trails to protect the forest floor; do not attempt to climb the rock face near the waterfall.
