Kurobe Gorge: Trolley Train Through Toyama's Deepest Canyon

The Kurobe Gorge Trolley Train: What Makes It Special

The Kurobe Gorge Railway (黒部峡谷鉄道) is a narrow-gauge trolley train that runs 20.1 kilometers through Japan's deepest V-shaped gorge, crossing over 20 bridges and passing through more than 40 tunnels. According to the official Kurobe Gorge Railway site, the line was originally built to transport materials for Kurobe Dam construction — one of Japan's great engineering achievements — and was later opened to passengers as a scenic railway.

The journey from Unazuki Station to Keyakidaira (欅平), the terminus deep in the mountains, takes approximately 80 minutes each way. Open-air carriages called torokko (トロッコ) give passengers unobstructed views of sheer cliff faces, an emerald-green river far below, and mountain tunnels that feel like they were carved yesterday.

This is one of the most dramatic scenic train rides in Japan — not in the gentle, pastoral sense of many Japanese rail journeys, but in the raw, geological sense. The gorge walls tower hundreds of meters above the river, and the railway clings to the mountainside with an engineering confidence that makes the ride feel both thrilling and completely safe.

Kurobe Gorge is one of several destinations in our Toyama city guide. For the mountain experience on the opposite side of the range, see our Tateyama mountain town and Alpine Route guide.

The Ride: Unazuki to Keyakidaira in 80 Minutes

Open-Air Cars vs Window Cars

The railway offers three types of carriages: open-air torokko cars (no windows, no walls), window-equipped enclosed cars, and a premium reserved window car. The torokko is the signature experience — wind in your face, unobstructed gorge views, and the full sensory impact of the mountain environment.

The tradeoff for torokko seats: weather exposure. Mountain conditions change rapidly, and rain, wind, and sudden temperature drops are common even in summer. Enclosed cars are more comfortable but reduce the visceral experience considerably.

Practical tip from visitors: sit on the right side heading to Keyakidaira and the left side returning for the best gorge views.

What to Bring and Wear

• Rain jacket or poncho: essential even on clear mornings — weather shifts quickly in the gorge
• Layers: temperatures can be 5-10°C cooler in the gorge than in Toyama city
• Comfortable shoes: Keyakidaira involves walking on uneven trails
• Sunscreen and hat: open-air cars offer no shade
• Cash: some facilities along the route are cash-only

Travel times by section:

Section	Time
Unazuki → Kuronagi	~25 min
Unazuki → Kanetsuri	~60 min
Unazuki → Keyakidaira	~80 min

Key Stops Along the Route

Kuronagi: Mountain Onsen Stop

Kuronagi is the first intermediate stop, approximately 25 minutes from Unazuki. The station provides access to a mountain onsen with outdoor baths overlooking the gorge. Many visitors pass through on the way to Keyakidaira and stop here on the return journey for a soak.

Kanetsuri: Riverside Hot Spring

Kanetsuri, roughly 60 minutes into the journey, is known for its riverside onsen where hot spring water meets the gorge river. The setting — bathing beside a rushing mountain river in a deep canyon — is one of the most dramatic onsen locations in Japan.

Both intermediate stops require planning around the train schedule, as services run every 1-2 hours. Check the timetable and confirm your return options before alighting.

What to Do at Keyakidaira

Sarutobi Gorge and Cannibal Rock Walkway

Keyakidaira (欅平) is the railway's terminus, accessible only by train — no roads reach this point. According to the Toyama Prefecture tourism site, the area features Sarutobi Gorge (猿飛峡), named for monkeys said to leap across the narrowest point, and the Cannibal Rock (食人岩) walkway — a path bored through a cliff face that gives an intimate view of the gorge's geology.

The Okugane Bridge spans the river near the station, offering views up and down the gorge. In autumn, the surrounding peaks are ablaze with red and gold foliage framing the emerald water.

Hiking Trails and Foot Baths

Short hiking trails lead from Keyakidaira station to viewpoints and riverside areas. Allow 1-2 hours for exploration — more if you plan to hike further. Foot baths are available near the station for tired feet after the trails.

Critical note: The only way back to Unazuki from Keyakidaira is the trolley train. There are no roads, no buses, and no alternative transport. Confirm your return train time before exploring, and do not miss the last departure — being stranded at Keyakidaira means waiting until the next day.

When to Visit: Seasons and Operating Dates

The Kurobe Gorge Railway operates from approximately late April through late November. According to the official site, the 2026 season opens April 20 (the 2025 season closed November 30). The railway is closed from December through mid-April due to heavy mountain snowfall.

Season	Conditions	Notes
Late April - May	Fresh green, cool	Some sections may have reduced service early season
June - August	Warm, lush	Comfortable but humid; occasional rain
Late September - early November	Autumn foliage	Peak season — most crowded, most scenic
Mid-November	Late autumn	Cooler temperatures, thinner foliage

Autumn foliage peaks from late October through early November and is the gorge's most celebrated season. The combination of red maples, gold beech, and evergreen conifers against the dark gorge walls is extraordinary. Expect large crowds, fully booked trains, and the need to reserve seats well in advance.

Summer offers comfortable weather and lush green scenery without the autumn crowds. Spring (late April-May) is quiet and fresh, with new green growth along the gorge.

Getting to Unazuki Station from Toyama and Tokyo

The trolley departs from Unazuki Station, which is a short walk from Unazuki Onsen Station on the Toyama Chiho Railway.

Route	Method	Time	Notes
Tokyo → Kurobe-Unazuki-Onsen	Hokuriku Shinkansen	~2.5 hours	JR Pass covers this leg
Kurobe-Unazuki-Onsen → Unazuki Onsen	Toyama Chiho Railway	~25 min	Not covered by JR Pass
Toyama Station → Kurobe-Unazuki-Onsen	Hokuriku Shinkansen	~20 min	Quick connection

From Unazuki Onsen Station, walk approximately 10 minutes to the Kurobe Gorge Railway departure platform.

Important: the Toyama Chiho Railway from Shin-Kurobe (near the Shinkansen station) to Unazuki Onsen is a private railway not covered by the Japan Rail Pass. Budget for this separate fare.

For the onsen town at the gorge entrance, see our Unazuki Onsen retreat guide. For connections from Toyama Station, the Shinkansen ride is approximately 20 minutes.