Iya Valley: Vine Bridges in Japan's Hidden Gorge
How to visit the Iya Valley in Shikoku: crossing the Kazurabashi vine bridge, the Oboke Gorge boat ride, remote villages and getting there.
Quick answer
- What it is: a remote, steep-sided valley in the mountains of western Tokushima Prefecture.
- Famous for: bridges woven from mountain vines, deep gorges and old hillside villages.
- Kazurabashi: about 45 metres long, crossing the Iya River, with an entry fee of 550 yen.
- Time needed: one full day, or two days to reach the inner valley.
- Best time: autumn leaves in November or fresh greenery in May.
The Iya Valley is one of Japan's three great hidden regions. Steep mountains, a jade green river and villages clinging to the slopes make it feel far away from modern Japan, and it is crossed by bridges made from vines.
Why the Iya Valley is a wonder
Legend says that warriors of the defeated Heike clan fled here after losing a great war in the 12th century. They built vine bridges that could be cut down quickly if their enemies followed.
The most famous, the Kazurabashi, is woven from thick vines over a steel cable for safety. It is rebuilt every three years by local craftsmen.
Crossing the bridge
The planks are spaced wide apart, and you can see the river far below through the gaps. The bridge sways with every step.
Further into the valley, the quieter Oku-Iya double vine bridges hang side by side, and a small manually pulled cable car crosses the river nearby.
Highlights of the valley
| Spot | What you see | Time (approx.) |
|---|---|---|
| Kazurabashi | The famous vine bridge, about 14 metres above the river | 30 minutes |
| Biwa Falls | A waterfall a short walk from the vine bridge | 15 minutes |
| Oboke Gorge boat | A cruise between smooth rock walls | 30 minutes |
| Peeing Boy statue | A small statue on a cliff edge high above the gorge | 10 minutes |
| Oku-Iya double vine bridges | Two vine bridges deep in the valley | 1 hour |
When to go
- Autumn: fiery leaves cover the gorge in November.
- Spring: fresh green slopes and comfortable walking weather.
- Summer: the river is cool and clear, but it can be humid.
- Weekdays: fewer tour buses at the Kazurabashi.
Our tip: Rent a car if you can. Buses are infrequent, and the narrow mountain roads lead to villages and viewpoints you would otherwise miss.
Getting there
- From Okayama: limited express trains on the Dosan Line reach Oboke Station in about 1.5 hours.
- From Oboke: buses take about 25 to 30 minutes to the Kazurabashi and run every 1 to 2 hours.
- By car: allow extra time, as the valley roads are narrow and winding.
Staying safe
- Hold the side vines and step carefully on the widely spaced planks.
- Wear sturdy shoes rather than sandals.
- Check bus times before you set out, as services are limited.
- Drive slowly on narrow mountain roads and use passing places.
Frequently asked questions
How much does it cost to cross the Kazurabashi?
Entry is 550 yen for adults.
Is the vine bridge safe?
Yes. The vines are woven over steel cables, and the bridge is rebuilt every three years.
How do you get to the Iya Valley?
Take a train to Oboke Station, then a bus of about 25 to 30 minutes to the Kazurabashi.
Can you visit the Iya Valley in a day?
Yes for the main sights, but staying overnight lets you reach the quieter inner valley.
Mount Aso
Rolling green grassland and a smoking crater inside one of the world's biggest calderas.
We check this guide regularly. Prices, hours and rules in Japan can change, so confirm with the official sources below before you travel. Spotted something out of date? Tell us.