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Nikko NP, Tochigi
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More than 70 waterfalls thread the Hōki River gorge at Shiobara. The famous cascades are just a small sample of this waterfall-filled valley in Nikkō National Park.
About 300,000 years ago, a lake occupied the Shiobara basin. Its sediments preserved fossils of more than 170 kinds of plants, along with insects, fish, frogs and even mice.
A 2.2-meter display of Shiobara’s ancient lake-bed layers records about 470 years of sediment. Alternating pale and dark bands are thought to mark annual cycles—like a natural calendar in stone.
Shiobara’s tote-yaki copies the flared horn once used on local horse-drawn carriages. Created in 2011, its castella-like batter uses local milk and eggs; shops fill it with anything from sweets to savory noodles.
After heavy rain washes away algae and moss, exposed rocks in the Hōki River can shine a startling marine-blue. They’re green tuff, formed from volcanic ash laid down under the sea about 14 million years ago.
Along the gorge, Shiobara’s 11 hot-spring areas draw from more than 150 sources. The waters span 6 spring types and are described in 7 colors, from milky white and golden to greenish white and ink-gray.
Mikaeri Falls means “Looking Back”: the story goes that departing travelers couldn’t resist turning around for one more view. The 53-meter cascade was also featured in Ozaki Kōyō’s novel The Golden Demon.
Ryūka Falls drops about 60 meters in 3 zigzag tiers, its white water resembling a dragon climbing toward the sky. Its name means “Dragon Transformation Falls,” recalling the familiar carp-to-dragon legend.
Local legend puts a mischievous tengu atop Tengu Rock: it hurled fire at the monk Kūkai, who drove it off by throwing a giant boulder. The tale says the area was peaceful after that.
Ryūshun Falls got its name because it used to dry up for 3 winter months, reappearing only in late spring—its name suggests “keeping spring.” It reportedly now flows year-round.
When the railway reached Nishinasuno in 1886, visitors still had 14 kilometers to travel to Shiobara’s hot-spring town. Tote-basha horse carriages carried them there, then later ferried tourists between attractions.
Ayu sweetfish don’t naturally migrate up to this stretch of the Hōki River, so the local fishery cooperative releases young fish in its middle reaches each year. Summer brings anglers to the gorge for the catch.
Near Nunotaki Falls, columns of rock look like logs stacked side by side—hence the local name Zaimoku-iwa, or “Lumber Rock.” They formed as andesite magma cooled and cracked into regular columns.
