Kurobe Gorge cuts through the Japanese Alps on the northwestern slope of Honshū, in Toyama Prefecture. The V-shaped ravine, whose walls rise above 1,500 m, is traversed aboard the Torokko, a narrow-gauge tourist train that connects Unazuki Onsen to Keyakidaira, crossing 20 bridges and 40 tunnels.

Why visit Kurobe Gorge

The site combines three rare attractions in Japan: an industrial railway heritage still in operation, a spectacular alpine landscape carved by the Kurobe River, and a chain of hot springs accessible from train stops. It is one of the deepest gorges in the archipelago, and the Torokko line remains the only practical way to traverse its interior, as the road ends shortly after Unazuki.

The experience combines a journey of approximately 1 hour 20 minutes in open-air carriages, panoramic views over the turquoise river, and the opportunity to disembark at several stations to access outdoor baths or short walking trails.

A line born from hydroelectric dams

The railway line serving the gorge—now operated as Kurobe Gorge Railway—was built by Kansai Electric Power Company to transport materials and workers to dam construction sites on the Kurobe River. The section became operational in 1926, then extended to Keyakidaira in 1937.

Service trains were nicknamed Torokko, a term now applied to tourist trains. Regular passenger service began in 1953. By the late 2000s, the operator maintained a significant fleet on this network—around 27 locomotives, over a hundred passenger cars, and several hundred freight wagons—used for both maintenance of electrical installations and tourism.

What to see along the line

The Unazuki → Keyakidaira route covers 20 km in approximately 80 minutes. Three intermediate stops allow you to structure your visit.

Shin-Yamabiko Bridge

Shortly after departing Unazuki, the train crosses the Shin-Yamabiko Bridge, a red arched structure spanning 166 m across the Kurobe River. This is the first striking viewpoint of the journey, visible from the hot spring town.

Kuronagi

First optional stop. A small halt above a steep meander, serving as the trailhead to a path leading to an isolated hot spring.

Kanetsuri

Central stop, known for the contrast between warm waters seeping along the riverbank and the light-colored bedrock. A terrace allows observation of the confluence.

Keyakidaira

Line terminus, at approximately 600 m elevation. The station features an observation terrace overlooking the upper valley. A few kilometers away lies the Babadani-onsen hot spring, frequented for its outdoor baths, particularly during autumn foliage season.

When to visit

The line is closed from late December to mid-April due to snow. The operating season therefore extends from spring through autumn.

• Mid-October to mid-November: most sought-after period, with momiji (red maples) coloring the slopes. Reservation highly recommended.
• May-June: green slopes, strong river flow following snowmelt, moderate crowds.
• July-August: cool temperatures at altitude, good compromise if seeking to avoid autumn crowds.

Practical information

• Starting point: Unazuki Station, at Unazuki Onsen.
• One-way journey duration: approximately 1 hour 20 minutes without stops; allow half a day to a full day with intermediate stops.
• Fares: one-way ticket at reasonable cost, supplements applicable for closed-seat or more comfortable cars. Check current pricing on the operator's website before departure.
• Reservation: recommended during peak autumn season, as the train may sell out.
• Equipment: bring a jacket; open-air cars allow air and moisture from tunnels to pass through.

How to get there

• From Tokyo: JR Hokuriku Shinkansen to Kurobe-Unazukionsen, then connection with Toyama Chihō line to Unazuki Onsen—approximately 2 hours 30 minutes total.
• From Toyama: local train on Toyama Chihō line to Unazuki Onsen, in approximately 50 minutes.
• From Unazuki Onsen Station, the Torokko station is a few minutes' walk away.

Nearby attractions

The region lends itself to a multi-day alpine loop. To combine with:

• Hiking and bathing around Unazuki Onsen, the most convenient base for exploring the area.
• The Tateyama-Kurobe Alpine Route, accessible from Toyama, which crosses the Japanese Alps from another slope.
• Other spiritual highlands in the country: Mount Kōya, Mount Hiei, or Mount Tsukuba.
• Hot springs and their Kinosaki Onsen museums to extend the onsen experience.

Frequently asked questions

Plan your itinerary

Kurobe Gorge naturally integrates into a circuit combining the Japanese Alps, the Sea of Japan coast, and historic cities of Honshū. To build a tailor-made journey including this stop, consult our Japan travel packages.