Biwa Falls: A Hidden Waterfall with a Samurai Legend

Tucked away in the misty mountains of Tokushima, Biwa Falls is the kind of place that makes you feel as though you have stepped into a movie.
Located in the remote and beautiful Iya Valley, this roughly 40-metre waterfall is close to the famous Iya Kazurabashi vine bridge. Water tumbles down the mountainside into the lush valley below, creating a peaceful spot where the sounds of rushing water and forest seem to drown out the modern world.
For travellers who love discovering hidden gems in Japan, Biwa Falls is an easy place to fall in love with.

The Banished Samurai

Biwa Falls isn’t simply a beautiful natural attraction. According to local tradition, its name is connected to one of Japan’s most famous historical clans: the Heike.
After their defeat in the Genpei War in the late 12th century, members of the Taira (Heike) clan are traditionally said to have fled into remote mountain regions, including the Iya Valley. The valley’s steep mountains, deep gorges and secluded settlements made it a natural refuge from the outside world.
Legend says that these Heike fugitives would gather at the waterfall and play the biwa, a traditional Japanese lute, while remembering Kyoto and the life they had left behind. The story became associated with the waterfall, giving it the name Biwa Falls.
Whether you view the tale as history, folklore or something in between, standing beside the waterfall makes the legend surprisingly easy to imagine.

Where Nature Meets Iya Valley

Iya is one of Shikoku’s most atmospheric mountain regions, famous for its steep valleys, traditional villages, dramatic scenery and connection to spiritual traditions.

The waterfall itself is particularly easy to visit while you are exploring Iya Kazurabashi. From the bridge area, it’s only a short walk to the falls, making it an ideal addition to a day spent exploring the valley. On certain days, sunlight catching the spray can even create a rainbow in front of the waterfall.
For those who want to linger, a nearby walking route leads farther into the landscape, with steps descending towards the river.
And that’s perhaps the best part of Biwa Falls: you don’t need a major hike to experience somewhere that feels wonderfully remote.

Why Add Biwa Falls to Your Shikoku Adventure?

Japan has no shortage of famous waterfalls, temples and scenic viewpoints. But the most memorable travel experiences are sometimes found just beyond the headline attractions.
Biwa Falls gives you the chance to slow down and experience a quieter side of Shikoku — one where nature, folklore and centuries of history overlap.
Imagine crossing an ancient-style vine bridge, walking through a mountain forest and then hearing the roar of a waterfall hidden among the trees. Add the story of wandering Heike survivors playing music beside the falls, and suddenly you’re no longer a tourist but a time traveller!