Ojirawa Gorge (Yamanashi Prefecture) Complete Guide｜Thorough Explanation of the Spectacular Gorge Selected as One of Japan’s 100 Best Waters
Ojirawa Gorge (ojirawa keikou), located in Hokuto City, Yamanashi Prefecture, is a spectacular spot woven by clear streams originating from Kaiekomadake, a famous peak of the Southern Japanese Alps. This gorge, selected as one of Japan’s 100 Best Waters, captivates many climbers and hikers with its emerald-green gleaming pools, powerful waterfalls, and beautiful gorge scenery created by the white rocky surfaces of granite.
This article comprehensively explains everything you should know before visiting this spectacular gorge, from its attractions to specific climbing courses, access methods, and points of interest throughout the four seasons.
What is Ojirawa Gorge? The Charm of Clear Streams Selected as One of Japan’s 100 Best Waters
Ojirawa Gorge is a gorge formed by the Ojirawa River, which originates from Mount Kaiekomadake (2,967 meters), a peak in the Southern Japanese Alps. The name “Ojirawa River” comes from white sand created by crushed granite covering the river bottom, giving the entire river a white appearance.
Clear Stream Selected as One of Japan’s 100 Best Waters
The Ojirawa River was selected as one of Japan’s 100 Best Waters by the Ministry of the Environment in 1985. Rain and snowmelt that fell on the deep mountains of the Southern Japanese Alps are filtered through granite layers over many years, flowing out as clear streams rich in minerals and with high transparency. This pristine water is also one of the water sources for the well-known “Suntory Southern Alps Natural Water,” making it a signature water spot representing Hokuto City.
Emerald-Green Gorge Beauty
The greatest appeal of Ojirawa Gorge is, without question, its water shimmering in emerald green. The clear stream flowing over white granite rock surfaces displays various expressions, from greenish-blue to deep blue-green depending on the light. Particularly at deep pools such as Sengatafuchi and Yurigafuchi, the high transparency and water depth create a mystical color that fascinates visitors.
Various large and small waterfalls and pools dot the gorge, each creating unique landscapes. You can enjoy gorge scenery rich in variety: waterfalls flowing with thunderous sound, quiet pools holding still water, and rapid currents weaving through giant rocks.
Main Spots in Ojirawa Gorge｜Detailed Introduction to Points of Interest
Several points of interest are scattered throughout Ojirawa Gorge, from the parking area to the deepest part of the gorge. Let’s take a detailed look at the characteristics and appeal of each spot.
Chikuu Komagatake Shrine and Suspension Bridge
The starting point for gorge exploration is Chikuu Komagatake Shrine near the Ojirawa Gorge parking area. This shrine, which enshrines Mount Kaiekomadake, has a suspension bridge leading to the gorge. Once you cross this suspension bridge, your full-fledged gorge walk begins.
The Ojirawa clear stream flows beneath the bridge, and from the bridge you can get a panoramic view of the beautiful stream and surrounding nature. It’s a popular photo spot where many climbers take commemorative pictures.
Sengatafuchi (Thousand Fathoms Pool)
Located about 15-20 minutes on foot from the parking area, Sengatafuchi is the most easily accessible spectacular spot in Ojirawa Gorge. Emerald-green water creates a deep pool, and its beauty is breathtaking. The water has such high transparency that on clear days, you can see to the bottom of the pool.
The Sengatafuchi area is relatively easy to access, so you can visit without full-scale climbing equipment. However, there are rocky areas and slippery sections, so trekking shoes or athletic shoes are recommended at minimum.
Asahi Waterfall
Heading further upstream from Sengatafuchi, Asahi Waterfall comes into view. Though relatively small in scale, the beauty of water sliding down the rocky surface is impressive. The contrast between surrounding greenery, white granite, and clear stream creates a landscape like a painting.
Yurigafuchi (Lily Pool)
Yurigafuchi beyond Asahi Waterfall is another pool with beautiful emerald-green water. It has a different atmosphere from Sengatafuchi, with a mystical space enveloped in silence. The pool is surrounded by large rocks, creating a landscape that evokes primordial nature.
Jinjadaki (Snake Shrine Waterfall)
Continuing further upstream from Yurigafuchi, you reach Jinjadaki, one of the representative waterfalls of Ojirawa Gorge. It’s about 1 to 1.5 hours from the parking area.
Jinjadaki is characterized by flowing in three stages while creating a deep pool (basin). During periods of abundant water flow, it rises with powerful spray, and the sight of it flowing down with roaring sound is spectacular. From the rocks around the waterfall basin, you can view the entire waterfall, and many climbers rest here.
Fudomaki (Immovable Waterfall)
Fudomaki, which flows at the deepest point of Ojirawa Gorge, becomes the final destination for gorge exploration. It’s about 2 hours from the parking area and requires serious trekking.
Fudomaki is a particularly powerful waterfall in the gorge, with an overwhelming presence as it flows down about 15 meters. To approach the waterfall, you need to climb a rock face about 7 meters high using ropes at the end, requiring some physical strength and technique. However, the spectacular view that awaits repays your effort.
The area around Fudomaki, being the deepest part of the gorge, spreads a quiet space surrounded by primeval forest. Enveloped in negative ions, you can feel the grandeur of nature with your whole being.
Climbing Courses in Ojirawa Gorge｜From Beginners to Advanced Climbers
Ojirawa Gorge has multiple courses that can be selected according to purpose and physical ability. I’ll explain in detail the characteristics, time required, and difficulty level of each course.
Sengatafuchi Round-Trip Course (For Beginners)
Time required: Approximately 40 minutes to 1 hour round-trip
Distance: About 700 meters one way
Difficulty: ★☆☆☆☆
The most accessible course to experience the beauty of Ojirawa Gorge. From the parking area, cross the suspension bridge and walk along the riverside path to Sengatafuchi. While the path is relatively well-maintained, there are rocky areas and exposed tree roots, so footwear of at least athletic shoes is recommended.
This course is perfect for families with small children or those who want to enjoy light hiking. However, the riverside path is slippery, so extra caution is needed in rainy weather or after rain.
Jinjadaki Round-Trip Course (For Intermediate Climbers)
Time required: Approximately 2.5 to 3 hours round-trip
Distance: About 2 kilometers one way
Difficulty: ★★★☆☆
A course that passes Sengatafuchi, Asahi Waterfall, and Yurigafuchi before reaching Jinjadaki. Rocky areas and steep slopes become more frequent along the riverside path, and the elements of serious trekking become stronger.
There are many unstable footing areas, making trekking shoes or mountaineering boots essential. While a certain level of physical fitness is required, it’s a popular course where you can fully enjoy the diverse gorge scenery.
Fudomaki Round-Trip Course (For Advanced Climbers)
Time required: Approximately 4 to 5 hours round-trip
Distance: About 3 kilometers one way
Difficulty: ★★★★☆
A serious climbing course that reaches Fudomaki at the deepest part of the gorge. The path becomes increasingly difficult beyond Jinjadaki, with chain sections and places requiring ropes.
Particularly the rock face just before Fudomaki requires climbing about 7 meters using ropes, demanding some mountaineering experience and physical fitness. Come prepared with mountaineering equipment (mountaineering boots, gloves, helmet recommended), and bring sufficient water and trail food.
Loop Course (Gorge Path → Ridge Path)
Time required: Approximately 3 to 4 hours
Distance: About 5 kilometers
Difficulty: ★★★★☆
A loop course that progresses upstream on the gorge path and returns to the parking area via ridge path partway. The gorge path is one-way upstream, so choosing this course allows you to efficiently explore while enjoying gorge beauty.
The ridge path, in contrast to the gorge path, is a quiet route through forest. There’s significant elevation change and requires physical fitness, but allows you to experience a different mountain atmosphere than the gorge.
Notes on Climbing
It’s important to understand that the climbing trail at Ojirawa Gorge has more serious mountain-walking elements than typical hiking courses.
- Equipment: Trekking shoes at minimum, preferably mountaineering boots
- Clothing: Long sleeves and pants, hat, rain gear
- Items to bring: Sufficient water (1 liter or more recommended), trail food, first aid kit, headlight
- Weather: Paths are slippery in rain or after rain and dangerous. Avoid entering during high water
- Time: Depart early to allow descent before sunset
- Physical fitness: Choose a course suited to your fitness level; don’t overexert
The gorge path is slippery, and ordinary athletic shoes are dangerous in many places. Especially wet rocks and tree roots are extremely slippery, requiring cautious movement.
Ojirawa Gorge Through the Four Seasons｜Seasonal Attractions
Ojirawa Gorge displays different faces with each season, offering varied attractions. Here are the points of interest for each season and precautions when visiting.
Spring (April-June): Fresh Greenery and Snowmelt
Spring in Ojirawa Gorge is a season of beautiful fresh green leaves. From April to May, snowmelt increases water volume, and waterfalls become more powerful. Particularly Jinjadaki and Fudomaki are impressive as they flow down raising spray, worth seeing.
However, during snowmelt season, rising water levels can flood normally passable areas. Also, patches of snow may remain, so confirm the latest information before visiting.
Summer (July-August): Seeking Coolness
Summer in Ojirawa Gorge is a busy season with climbers seeking cool refreshment. The gorge interior has lower temperatures than surroundings, and the murmuring stream and forest shade provide pleasant coolness. The emerald-green pools shine most beautifully this season and are ideal for photography.
Summer offers longer daylight, allowing relatively leisurely exploration. However, afternoon thunderstorms are common, so plan early activity. Also, insect repellent measures are necessary.
Autumn (September-November): Gorge Beauty with Autumn Leaves
Autumn in Ojirawa Gorge features autumn foliage as its greatest attraction. From mid-October to early November, trees around the gorge turn red and yellow, creating spectacular views with striking contrast against the emerald-green clear stream.
Particularly around Sengatafuchi, pools surrounded by autumn leaves create a mirror-like reflection that takes your breath away. The autumn foliage season attracts many tourists, and the parking area becomes congested. Early morning visits are recommended.
Winter (December-March): Frozen Waterfalls and Silent World
Winter in Ojirawa Gorge is a season for advanced climbers. As temperatures drop, waterfalls freeze, creating a spectacular sight called ice waterfalls (hyoubaku). The landscape created by frozen waterfalls, continuing clear streams, and snow-covered rocks is something special not seen in other seasons.
However, winter brings heavy snow and freezing, making the trail extremely dangerous. Winter mountaineering equipment (crampons, poles) is essential, and those without winter mountain experience should avoid it. Also, pay attention to time management as sunset comes early.
Access Methods｜How to Get There by Car and Public Transportation
Here’s a detailed explanation of access methods to Ojirawa Gorge by both car and public transportation.
Access by Car
Car access is most convenient.
From Tokyo:
- About 25 minutes from “Sudama Interchange” on the Chuo Expressway
- Or about 20 minutes from “Kobuchisawa Interchange” on the Chuo Expressway
From Nagoya:
- About 25 minutes from “Sudama Interchange” on the Chuo Expressway
After exiting Sudama IC, drive north on National Route 141, then via Prefectural Road 610 (former National Route 20) toward Hakushu. Following the “Ojirawa Gorge” guidance signs will bring you to the Ojirawa Gorge parking area.
Parking Information
Ojirawa Gorge Parking Area
- Address: Hakusu, Hakushu-cho, Hokuto City, Yamanashi Prefecture
- Capacity: Approximately 100 regular vehicles, several large buses
- Fee: Free
- Restrooms: Available
During autumn foliage season and weekends, the parking lot may be full. Especially on weekends from October to November, arrival before 8 AM is recommended. If the lot is full, roadside parking is prohibited. Adjust your timing or visit on another day.
Access by Public Transportation
Public transportation access is somewhat inconvenient.
Train + Bus:
- Get off at “Kobuchisawa Station” on JR Chuo Main Line
- Board a local bus from Kobuchisawa Station to “Hakushu/Ojirawa no Mori Meisui Park Bella” (approximately 30 minutes)
- Get off at “Ojirawa Gorge Entrance” bus stop, walk approximately 15 minutes
With limited bus frequency, check the schedule in advance.
Train + Taxi:
- Get off at “Kobuchisawa Station” or “Nirasaki Station” on JR Chuo Main Line
- Taxi for approximately 20-30 minutes
Using a taxi from Kobuchisawa Station costs approximately 4,000-5,000 yen one way. With limited taxi availability, advance reservation is recommended.
Nearby Tourist Attractions｜Enjoy Together with Ojirawa Gorge
There are many charming tourist attractions near Ojirawa Gorge to visit together.
Ojirawa no Mori Meisui Park Bella
A comprehensive recreation facility about 5 minutes by car from Ojirawa Gorge. Features include the “Ojirawa no Yu” hot spring using Ojirawa water, accommodation facilities, and a campground, where you can relax after gorge exploration.
Suntory Hakushu Distillery / Natural Water Southern Alps Hakushu Factory
A manufacturing facility for whisky and natural water using Ojirawa spring water. Factory tour programs (reservation required) allow you to learn about the manufacturing process and enjoy tasting. About 15 minutes by car from Ojirawa Gorge.
Hakushu Ojirawa no Mori Meisui Park
A nature park for forest bathing with walking paths and athletic facilities. Popular with families.
Hinatayama (Mount Hinata)
A mountain 1,660 meters high that stands across from Ojirawa Gorge. The summit area features a white sandy beach-like granite landscape, sometimes called “Japan’s Salar de Uyuni,” and has recently become popular on social media. You can climb from the same parking area as Ojirawa Gorge.
Mount Kaiekomadake
The source peak of Ojirawa River and a famous peak in the Southern Japanese Alps. At 2,967 meters, it’s one of Japan’s 100 Famous Mountains. The route from Ojirawa Gorge via Kurodo Ridge to the summit is a serious mountaineering course for skilled hikers.
Practical Information for Visiting Ojirawa Gorge
Basic Information
- Location: Hakusu, Hakushu-cho, Hokuto City, Yamanashi Prefecture
- Hours: 24 hours (however, entry at night/early morning is not recommended)
- Admission: Free
- Best Season: May-November (especially mid-October to early November during autumn foliage)
- Time Required: 40 minutes round-trip to Sengatafuchi to 5 hours round-trip to Fudomaki (varies by course)
Inquiry Contacts
- Hokuto City Tourism Association: 0551-42-1351
- Hokuto City Tourism Division: 0551-42-1351
- Hokuto City Hakushu General Branch Office: 0551-42-1111
Photography Information
Ojirawa Gorge is also popular as a photography spot. Particularly the emerald-green pools and waterfalls captivate many photographers.
Photography Tips:
- Sengatafuchi has beautiful light in the morning
- ND filters are useful for waterfall photography to smoothly express water flow
- Early morning photography is recommended during busy autumn foliage season
- When using tripods, be considerate of other climbers’ passage
- Drone usage may be restricted; check in advance
Safety Notes
- Avoid entering during high water or rain
- Avoid solo hiking; climb with multiple people when possible
- Mountain climbing registration is recommended (submit at Hokuto City Hall or the trail head submission box)
- Cellular coverage doesn’t reach some areas; prepare for emergencies
- Always take your trash with you
- Watch for wildlife (especially bears); carry bear bells
- Don’t drink gorge water (risk of parasites like echinococcus)
Facilities Within Area
While the parking area has restrooms, there are none within the gorge. Be sure to use the facilities before departure. There are no vending machines or shops, so prepare drinks and food in advance.
The nearest convenience stores are along National Route 20. It’s recommended to stop by before reaching the parking area.
Conclusion: Experience the Nature of the Southern Japanese Alps at Ojirawa Gorge
Ojirawa Gorge is a representative tourist destination of Yamanashi Prefecture where you can experience the spectacular scenery created by a clear stream selected as one of Japan’s 100 Best Waters and the grand nature of the Southern Japanese Alps. The emerald-green shimmering Sengatafuchi, powerful Jinjadaki and Fudomaki, and gorge beauty that changes through the seasons all provide visitors with deep emotion.
You can choose from courses enjoyable for beginners, such as the Sengatafuchi round-trip course, to serious mountaineering requiring full equipment at Fudomaki, selecting based on your fitness and experience. However, it’s important to understand that this is serious mountain walking quite different from typical hiking courses, with many rocky areas and steep slopes, and to visit with appropriate equipment and preparation.
With good expressway access, you can even visit as a day trip from Tokyo or Nagoya. The surrounding area also features hot spring facilities and other tourist attractions, allowing you to enjoy a full day at leisure.
Seek out the overwhelming natural beauty created by the clear streams of the Southern Japanese Alps and visit Ojirawa Gorge. Time spent in the gorge surrounded by pure water and greenery, away from the hustle and bustle of the city, will be a special experience that refreshes both body and mind.
