Fugaku Wind Cave

Just down the road from the Narusawa Ice Cave, the Fugaku Wind Cave is another must-see spot in the Fuji Five Lakes area. This naturally formed lava tube stays cool all year, with temperatures around zero degrees even in summer, perfect for a quick escape from the heat. Inside, you’ll see displays showing how the cave was once used to store silkworm eggs and seeds, along with impressive ice pillars and rock formations. The walk is smooth and easier than the Ice Cave, making it great for families or anyone wanting a calmer underground experience. The site is well-maintained, has clear English signs, and offers free parking nearby. A short, cool, and educational stop, best enjoyed together with the Ice Cave for a full Mount Fuji lava cave adventure.

Cheap but cheerful cave experience amongst beautiful naturescape. We visited in autumn. Short steep climb down to cave mouth. Cold so prepare accordingly. Approx 15min round trip. Nearby is Ice Cave (30min by foot, 2min by car) - can purchase combo tix on the day. Definitely recommend walking on the beautiful trail.

Interesting. Though not all the ice here are natural, there are blocks of ice that are definitely unnatural. Visited in winter so it was a about the same temperature as outdoors. There were small natural icicles at the entrance as well as certain areas inside.

Fugaku Wind Cave is an interesting lava tube formed over 1,000 years ago by an eruption of Mt. Fuji. Compared to the nearby Narusawa Ice Cave, this one offers a wider and more comfortable passage, allowing for an easy and pleasant walk through its cool, dark interior. Inside, the temperature remains around 3°C year-round, and during the Edo period the cave was used as a natural refrigerator for silkworm eggs and seeds. The visit takes about 15–20 minutes, and buying a combined ticket for both caves is convenient and recommended, as they complement each other perfectly. What I found most captivating were the walls covered with vivid green mosses and lichens, their color strikingly contrasting with the glossy black lava. Interestingly, these plants grow even in the deeper parts of the cave, where artificial lighting allows them to photosynthesize, creating a mysterious and almost surreal atmosphere.

The Fugaku Wind Cave is a fun place to visit if you can physically handle the walk and crawling in some cases. The entire trip involves walking up and down many stairs. Make sure you pick up a helmet at the entrance to protect your head if you are not a short person. The cave is fun to watch if you know you can handle it physically.

wind caves were cool and it wasn't as long as we thought. if you stop and and read everything, then MAYBE it would take you 20 minutes to get through it, with kids. it's very neat looking and awesome atmosphere.

Although brief, it’s a fun experience, especially in summer when it’s hot outside. A 10-minute walk through the cave offers a cool, windy, and refreshing escape. There’s also a bat cave and an ice cave nearby that are worth checking out.

Unfortunately it was pretty underwhelming, mainly an underground tunnel with some ice and a silk moth farm. The ice pillars looked nothing like the pictures and seemed very artificial. There's nothing special about the cave.

Much like the nearby ice cave the Lava cave is a quick cool experience. Something interesting to experience if you've never been to a cave before. The floor is pretty wet in some parts so make sure you have appropriate footwear, and for you taller folks make sure to grab one of the free helmets since a few parts of the cave you'll need to crouch down pretty low.

How many times do you get the opportunity to explore one of the lava caves of Mt. Fuji? While in Fuji, we decided to make a quick stop st this wind cave. The tour itself is super cool, we saw ice inside the cave. Although super short, it was a fun experience and only cost ¥300. I would recommend getting the all day admission bus ticket (¥1,500). If you're here for two days, you can get the two day pass for not much more yen. It's a bit of a ride from the Kawaguchiko Station (~40 minutes) because there are multiple stops before the wind cave. The cool thing with the bus pass is that you can get on and off any of the pick up and drop off spots so if you see something interesting, you can just request to stop and go explore!

Our small group topped off our cave adventures with the Fugaku Lava cave. This cave is also, like the others, in that it's a natural refrigerator tucked in a not so deep part of the Aokigahara forest. Inside it is pretty chilly, but nothing a light sweater or jacket couldn't handle. This may have been my least favorite of the caves, but they're all really interesting if you've never been in a cave like this before or just if you're looking for something fun to do on the side in the area. It is also pretty wet and mucky inside. Just be kinda prepared. There is a path you can follow and overall requires a small amount of walking and climbing. Everything was closing up for the day, so we didn't get to check out this cave's gift shop, but it is toward the beginning on the roadside. Plenty of free parking and a large map is pinned up of most of the area too.