Deep beneath the forest near Mt. Fuji lies the Fugaku Wind Cave, a wide, walkable lava tube that stays cold all year round—even in the heat of summer. Unlike the nearby Narusawa Ice Cave, this one is easier to explore : flat ground, well-lit paths, and plenty of space to walk upright.
This naturally chilled tunnel was once used to store silkworm cocoons and seeds, and today offers a quick, fascinating look into Mt. Fuji’s volcanic past. Whether you’re pairing it with the Ice Cave or visiting on its own, it’s a cool and convenient stop—literally.
→Want to take in these views—and more—without the hassle? A guided tour is a great way to enjoy the whole area.
What is the Fugaku Wind Cave?
The Fugaku Wind Cave is a naturally chilled lava tube formed by Mt. Fuji’s eruption over 1,100 years ago. Stretching about 200 meters, the cave maintains a cool temperature of around 3°C (37°F) year-round—even in summer. Unlike the narrower Narusawa Ice Cave, this one is flat, wide, and easy to walk through, making it suitable for all ages.
As you step inside, here’s what to expect :
• Preserved ice formations, lasting all year thanks to natural insulation
• Mossy lava walls with unique textures and patterns
• Historic displays showing how silkworm cocoons and seeds were stored inside
• Soft lighting, illuminating the features without overwhelming the darkness
The walk takes about 15–20 minutes, and no helmets are needed. It’s a quiet, surreal experience that contrasts nicely with the wilder Ice Cave nearby.
The moment I stepped in, I felt the cool air wrap around me—like entering a secret world under the forest. It’s quiet, spacious, and the ice displays are beautiful. I didn’t expect to enjoy it this much!
Fugaku Wind Cave vs. Narusawa Ice Cave
If you’re already visiting Narusawa Ice Cave, it’s highly recommended to stop by Fugaku Wind Cave as well. The two caves are only 20 minutes apart on foot, and offer very different experiences.
| Fugaku Wind Cave | Narusawa Ice Cave | |
|---|---|---|
| Atmosphere | Calm, spacious, and quiet. A mysterious ice corridor deep in the forest. | Narrow and thrilling. Feels like a mini underground adventure. |
| Difficulty | Flat path, wide space, soft lighting. Safe for kids and older visitors. | Tight passages, low ceilings, slippery steps. Helmet required. |
| Best For | Families, seniors, and those who prefer a relaxed, educational walk. | Active travelers, adventure-seekers, teens, and young adults. |
| Photo Spots | Well-lit interior and icy displays. Easy to take memorable photos. | Dark and rugged, but offers close-up shots of ice formations. |
| Extras | Educational displays and history. Connected to Mori-no-Eki “Fuketsu” with snacks and souvenirs. | Pure cave experience with a stronger focus on raw nature. |
If you want a calm, cool walk through a lava tunnel—go for the Wind Cave. But if you’re up for crouching and slipping a bit to feel like an explorer, try the Ice Cave first!
I always recommend doing both—you’ll see how different they feel, even though they’re so close together.
How to Get There
The Fugaku Wind Cave is located in Aokigahara Forest, west of Lake Saiko.
From Kawaguchiko Station
• Take the Saiko Sightseeing Bus (Green Line) and get off at Fugaku Fuketsu Iriguchi (風穴入口) stop
• Bus ride: ~25 minutes
• Taxi: ~20 minutes
• Bicycle: ~45 minutes
From Narusawa Ice Cave
• About a 20-minute walk through forest paths (well-marked)
❓ Q&A – Fugaku Wind Cave
Is Fugaku Wind Cave worth visiting?
Absolutely! It’s easy to walk through, naturally cool, and full of history. If you’re in the Mt. Fuji area and want something unique but not too intense, this cave is perfect.
How do I get to Fugaku Wind Cave?
Take the Saiko Sightseeing Bus (Green Line) from Kawaguchiko Station and get off at Fugaku Fuketsu Iriguchi. The ride takes about 25 minutes. From the Narusawa Ice Cave, it’s a 20-minute walk through the forest.
Is it easy to walk inside?
Yes! The path is flat and well-lit, with no helmets required. Compared to the Ice Cave, it’s much more accessible—even for kids and older visitors.
How cold is Fugaku Wind Cave?
It stays around 3°C (37°F) all year. It’s cool but not freezing—just bring a light jacket, even in summer!
When is the best time to visit Fugaku Wind Cave?
Any time of year works, but summer is ideal—you’ll really appreciate the natural air conditioning! And if you want fewer crowds, come early in the morning or on a weekday.
Visitor Info (as of 2026)
📍 Location : Aokigahara Forest, Narusawa Village, Yamanashi Prefecture
🚉 Nearest Station : Kawaguchiko Station (Fujikyuko Line)
🚌 Access :
• From Kawaguchiko Station :
– Take the Saiko Sightseeing Bus (Green Line)
– Get off at Fugaku Fuketsu Iriguchi (風穴入口) stop
– Bus ride: ~25 minutes
• From Narusawa Ice Cave : ~20-minute walk through forest paths
• Free parking available
🕐 Hours : 9:00 AM – 5:00 PM (may vary by season)
💴 Admission : ¥350 (adults), ¥200 (children)
🛁 Facilities :
• Souvenir shop & snacks at Mori-no-Eki “Fuketsu”
• Restrooms and vending machines
• Multilingual signage (English available)
• No reservations needed
It’s easy to visit—buses are regular, and the shop next door has great local snacks! If you’re doing both caves, I recommend starting early and wearing comfy shoes.