Narusawa Ice Cave Tickets

Narusawa Ice Cave is a short, chilly passage through lava rock near Mt. Fuji, where ice pillars can linger even in summer. The cave formed during the mountain’s great eruption in 864 and is a national natural monument.

I like two things here: the chance to see volcanic formations at close range, and the sharp contrast between a warm day outside and a cave that averages just 3°C. The low ceilings and steep stairs also make this more than a quick look through a display case.

The trade-off is scale. The route is only about 153 meters long, and the loop can feel brief, especially if you have come a long way expecting the dramatic ice scenes shown in photos. What you see can vary with the season and cave conditions.

• Born in an 864 eruption: The cave is a natural lava passage formed during Mt. Fuji’s Jogan-era eruption.
• Cold through the year: The interior averages about 3°C, with ice pillars visible even in summer.
• A short but physical walk: Expect steep stairs, low ceilings, damp surfaces, and a 21-meter climb on the way back.
• Close to the Aokigahara forest: The cave sits near the eastern edge of Aokigahara Jukai, in the Mt. Fuji area.
• Easy to reach by sightseeing bus: From Kawaguchiko Station, take the Blue-Line or S4 bus to the Narusawa Ice Cave stop.
• Not for every child or pet: Children under 3 or under 100 cm cannot enter, and animals are not allowed inside.

A lava tunnel formed by Mt. Fuji

This is not a carved cave or a themed attraction. Narusawa Ice Cave is a natural passage left by volcanic activity, formed in 864 during the great eruption of Mt. Fuji. Its total length is about 153 meters, and it is designated a national natural monument.

That origin gives the visit its strongest appeal. You are walking through a small piece of the mountain’s volcanic past, close to the eastern edge of Aokigahara Jukai. The setting helps explain why caves formed here, while the dark rock and narrow route make the geology feel immediate rather than abstract.

The cave was also used as a natural refrigerator for storing ice. Today, you can see ice pillars up close inside. The interior averages about 3°C, so even a summer visit brings a sudden chill. Bring a light layer rather than assuming the short walk will be too brief to feel cold.

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What the cave walk is like

The route takes you through a passage shaped by lava flows, with low ceilings and steep stairs. The cave is narrow in places, so this is not a stroll where you can keep your eyes on your phone or rush ahead without looking. Watch your head, and take care on the damp, slippery footing.

The route is short, about 153 meters in total. A visitor described the loop as brief, and that is useful to keep in mind when deciding whether to make a special trip. The cave can deliver an unusual close-up look at volcanic rock and ice, but it is not a long underground adventure.

The stairs make the walk more demanding than the distance suggests. On the return, you climb 21 meters in one go. If stairs are difficult for you, or you are unsure about the footing, factor that into your decision before entering.

There is no guide or guided tour specified for this ticket. You are buying admission to the cave, so plan to explore at your own pace and pay attention to the safety notices. The attraction’s appeal comes from the natural passage itself, not from a long program of stops or commentary.

Ice pillars, with seasonal expectations

Ice is part of the cave’s identity, and pillars can remain even in summer. But it is wise to separate that fact from the promise of a huge, photogenic display. The amount and appearance of ice can vary, and a visit in October, for example, may offer some formations without matching the most dramatic images you have seen online.

That uncertainty is not a reason to skip the cave if you are interested in volcanic geology. It is a reason to treat the ice as one feature of a compact natural attraction, not as a guaranteed spectacle. The lava formations, low passage, cool air, and unusual history of ice storage all help make the stop worthwhile.

Conditions inside the cave can also affect opening hours. Check the day’s schedule before setting out, especially if your plans depend on a bus connection or a tight day trip. The posted hours change by season, and weather or conditions inside may alter them.

Is the ticket good value?

Admission starts at $0.95, an unusually low entry price. At that rate, the cave can be a good-value stop if you are already in the Mt. Fuji area or passing nearby. The small admission cost is easy to justify for a brief look at a natural formation with a specific volcanic history.

The bigger cost may be your time getting there. If you are travelling from far away just for the cave, the short loop can leave you wanting more. Consider pairing it with another nearby stop rather than building a full day around this one attraction. Fugaku Wind Cave is another lava cave in the area, and bus connections from Kawaguchiko make the wider region easier to explore.

Keep the ticket’s terms in mind when you book: the mobile voucher is valid for 30 days from confirmation and expires at 23:59 on the final day. Cancellations and refunds are not available. Since the schedule can change, do not buy on the assumption that a particular time will always be open.

Getting to Narusawa from Kawaguchiko

The simplest public transport option is the sightseeing bus from Kawaguchiko Station. Take the Blue-Line or S4-Line and get off at the Narusawa Ice Cave stop, which is right by the attraction. If you are arriving by train, first reach Kawaguchiko Station on the Fujikyuko Line, then continue by sightseeing bus.

By car, the cave is about 12 kilometers from Kawaguchiko Interchange on the Chuo Expressway, using National Route 139. From the Shizuoka side, it is about 12 kilometers from Fujiyoshida Interchange on the Higashi-Fujigoko Road, also via Route 139.

The address is Narusawa 8533, Minamitsuru-gun, Yamanashi Prefecture. The full postal address is 8533 Narusawa-mura, Minamitsuru-gun, Yamanashi Prefecture 401-0320. The mobile voucher is redeemed at the attraction.

What to wear and who should take care

Choose comfortable shoes with good grip. The floor is humid and very slippery, while the route has many stairs. Heels or shoes that make walking difficult are a poor choice here. The low ceiling is another reason to move carefully and keep your hands free where possible.

The temperature difference can be 20°C or more between the cave and the summer air outside. That sudden change matters if you have a heart condition; the attraction advises people with heart conditions to refrain from entering. Older visitors should also consider the steep stairs and the 21-meter ascent on the return.

Children under 3 years old or under 100 cm tall are not permitted to enter. Carrying a child or having a child ride piggyback is not allowed either. Animals cannot enter the cave, including animals in carriers, so people travelling with pets need to take turns.

Opening hours change through the year

Hours vary with the season, and conditions inside the cave or the weather can prompt changes. The listed schedule is:

• August 27 to October 15, 2026: 9:00 to 17:30
• October 16 to November 15, 2026: 9:00 to 17:00
• November 16, 2026 to February 15, 2027: 9:00 to 16:30
• February 16 to February 28, 2027: 9:00 to 16:00
• March 1 to March 15, 2027: 9:00 to 16:30
• March 16 to July 31, 2027: 9:00 to 17:00

Check current hours before you leave. A short cave visit does not need much planning once you arrive, but the bus ride or drive can make an unexpected closure frustrating.

Who will enjoy this stop?

Narusawa Ice Cave suits you if you are curious about Mt. Fuji’s volcanic geology, want a quick natural attraction near Kawaguchiko, or enjoy compact places with a little physical challenge. It can also be a welcome cool stop on a hot day, provided you bring suitable shoes and a layer.

It is less suitable if you expect a long cave expedition, need step-free access, are uncomfortable with tight spaces, or are mainly going for a massive field of ice. The cave’s short length is both its convenience and its limitation. You can see a distinctive natural feature without spending half a day underground, but you should keep expectations in proportion.

I would book it as one part of a Mt. Fuji-area day, not as the sole reason to travel a long distance. If you are already near Kawaguchiko, the low ticket price, unusual lava passage, and cold ice-lined interior make it an appealing stop. If you need a longer outing, consider pairing it with the nearby Fugaku Wind Cave or another regional activity.

FAQ

How long is Narusawa Ice Cave?

The cave is approximately 153 meters long. The route is described as a short loop, though no exact visit duration is provided.

How cold is it inside the cave?

The average temperature is about 3°C. In summer, the temperature difference between inside and outside can be 20°C or more.

Can I see ice in summer?

Ice pillars that remain in summer can be seen inside the cave. The amount and appearance of ice may vary with the season and conditions.

How do I get to the cave by bus?

From Kawaguchiko Station, take the sightseeing bus on the Blue-Line or S4-Line and get off at the Narusawa Ice Cave stop. The stop is right by the attraction.

Are young children allowed inside?

Children under 3 years old or under 100 cm tall are not permitted to enter. Children cannot enter while being carried or piggybacked.

Can I bring a pet into the cave?

No. Animals are not allowed inside, including animals in carriers. People visiting with pets are asked to enter the cave in shifts.

What should I wear?

Wear comfortable shoes with good grip because the cave has many stairs and the floor can be slippery. The ceiling is low, so watch your head, and consider bringing a layer for the cold interior.