Exploring Mt Fuji Ice Cave and Sea of Trees Forest
Description
A mysterious forest and lava cave created by Mt. Fuji, a professional guide will explain the nature, history, flora and fauna of the forest. There are many anecdotes about Jukai, several movies and documentaries have been produced, and many books have been published. We will guide you through the attractive forest in an easy-to-understand manner. Guides who are qualified as nature observation instructors will explain in a fun way. Ice caves are very rare as lava caves, and ice can be seen all year round, and cave exploration can be enjoyed by children and adults alike. Children, couples, families, clubs, company trips, anyone can enjoy it with peace of mind. The foot of Mt. Fuji is also known as a power spot. Let's make new discoveries together. The tour is operated in a small group, normally individual guests require to obtain a special entry permit from the Tourism Association of the town.The forest and caves are part of a World Heritage Site and a national park.
Tour Options
Itinerary
You will begin to refresh with forest fresh air and start hiking. You will be captivated by the plateau lava and unique shapes of trees. You may meet Japanese squirrels and deer and other animals in the forest. You can hear the chirping of birds such as woodpeckers and Japanese tits etc. In each season, you can see unique wild plants such as rare orchids, mushrooms, and evergreen plants, lichens and algae etc. There is something inseparable from Aokigahara Jukai. It's moss. When you enter the sea of trees, the first thing you see is the moss that covers the ground. The area of Aokigahara Jukai is about 30 square kilometers, if you use the Tokyo Dome as an example of its size, it is equivalent to 200 Tokyo Domes. The vast sea of trees is covered with moss. It's a paradise of moss. Rare mosses and lichens are also a must-see. Enter a mysterious cave. This cave is a lava cave and has ice all year round. During the Meiji era, this place was used as a refrigerator.
Highlights
What's included
Pickup Locations & Times
Fujikawaguchiko station 3641 funatsu, Fujikawaguchiko-machi minamitsuru-gun, Yamanashi 4010336 JAPAN
Traveller Ratings
Important Information
- Suitable for all physical fitness levels
- For participants age at 6 - 11 years old,parents or a guardian must be accompanied
Reviews(88)
The ice caves tour was great. Very interesting to see. Our guide Toshi was very knowledgeable and passionate about the plants and fungus in the area. The forest was hauntingly beautiful. Would definitely recommend this tour.
Thank you very much for your wonderful comments. As the season progresses, many kinds of mushrooms will start appearing in the forest. If you love mushrooms, mosses, and nature, we highly recommend joining our Jukai Forest Tour. We would love to see you again at the foot of Mt. Fuji! 🌲🍄✨
Great tour of ice caves. Guide was terrific! Be prepared for real cave hiking, very natural, undisturbed environment. Rugged
Thank you very much for your kind comments. I hope you enjoy your trip in Japan. Mount Fuji is waiting for you, so please come visit again someday!
We had a great tour with Toshi! The cave and the forest were impressive and he told us a lot about the nature. It was a lot of fun and we definitely recommend booking this adventure.
Thank you very much for joining the tour, and also for your lovely comments. From now on, mushrooms and summer flowers will begin to appear, and the forest will become lively with squirrels, badgers, and birds. Please come visit the foothills of Mount Fuji again someday!
Highly recommended!! The forest is beautiful, and Toshi-san knew a lot about the trees, mosses, flowers and animals, as wel as the history. The cave was amazing, it almost seemed like a different world, with all the glittering ice and the cold temperature. Apparently during winter there are giant ice stalactites and stalagmites, which would be amazing to see! I went when it was very warm and sunny, and when you go down into the cave entrance it's almost like standing in front of a giant freezer, so I also recommend it during the warmer months! First time I've been in an actual cave, 10/10 😁😁
Thank you so much for your kind comments. It was a pleasure and an honor to talk with you. I really enjoyed hearing many stories about Germany and learned a lot from our conversation. How did you like the unique Sea of Trees forest? It is a rich and fascinating forest with distinctive lava terrain, unusual plants, fungi, and mosses. As we move toward summer, many different creatures begin to appear and become active. But even in the middle of summer, the cave stays cool and refreshing. Please come visit the foothills of Mt. Fuji again someday. I would be happy to show you around the small village where I live.
Toshi was an awesome guide and kept all 4 of us engaged and entertained the whole time. He even picked us up and dropped us off at our hotel. This was one of our favorite activities in Japan!
It was great meeting you all. As we head into summer, the weather will get hotter and hotter, but the Sea of Trees forest stays cool thanks to the lush green trees, and the ice cave offers a truly blissful moment of refreshment. Everyone, escape the heat of Tokyo and come visit Mt. Fuji and its beautiful cool forests!
We had a great time in the forest and exploring the cave. It was a suspended moment! Toshi san has taught us a lot about the flora and fauna of Mount Fuji, but also about Japan in general. He has very good communication and good humor! It was a pleasure to have him as a guide! Thank you very much Toshi san!
Ce fut un réel plaisir de vous rencontrer. Merci pour vos charmants récits sur la France. J'espère que vous passerez un excellent séjour à Kyoto et à Okinawa. Qui sait, peut-être pourrons-nous gravir le mont Fuji ensemble un jour ! N'hésitez pas à revenir visiter la région des Cinq Lacs de Fuji quand vous le souhaitez. It was so nice meeting you. Thank you for the lovely stories about France. I hope you have a fantastic time in Kyoto and Okinawa. Hopefully someday we can climb Mt. Fuji together! Please come back and visit the Fuji Five Lakes area again anytime.
Toshi was an incredible guide. It was obvious that he loved what he did and gave us great information about the local fauna. We thoroughly enjoyed the experience.
Thank you so much for your kind comment. Even though it’s already spring, the icicles and ice formations inside the caves are still very impressive to see. From now on, the Aokigahara forest will start to come alive—fresh green leaves will appear, and plants, animals, and even microorganisms will become more active, making it an exciting season to visit. We would love to welcome you back to the Fuji Five Lakes area again!
Exploring the Mt. Fuji Ice Cave with Toshi-san was honestly one of the most unforgettable experiences of our trip. We went on a cold, snowy day, which made the entire landscape feel quiet and almost dreamlike. Toshi-san’s calm, steady presence made it easy to fully take it all in and appreciate the surroundings. Along the way, he pointed out details we would have completely missed on our own—various types of fungus growing on the trees, how parts of the forest are being affected by disease, and even specific leaves traditionally used for sushi plating. These small insights added so much depth, turning a simple walk into something truly educational and eye-opening. He also kept things fun and engaging—at one point, he played a clever trick on us by mimicking a bird call so convincingly that we were all looking around trying to spot it. It was a small moment, but it made the experience feel even more personal and memorable. The Ice Cave itself was incredible—raw, silent, and otherworldly. What made it even more fascinating was learning its history. Toshi-san explained how the cave was once used to store silkworm eggs and other silk-related materials, using the naturally cold temperatures for preservation long before modern refrigeration. That context made the experience feel much more meaningful. What stood out most was his attentiveness—he paced everything well, checked in often, and made sure everyone was comfortable despite the cold conditions. Nothing felt rushed or overly scripted. If you’re looking for more than just sightseeing—something immersive, thoughtful, and genuinely memorable—I can’t recommend Toshi-san enough.
Thank you so much for your kind and wonderful comment. It was truly a pleasure meeting you. I was genuinely impressed by your insight, and I learned a great deal from you as well. The scenery of the Aokigahara forest and Mt. Fuji changes beautifully through the seasons—spring, summer, autumn, and winter—and sometimes surprises us with breathtaking views. We would be delighted to welcome you back again.
It was a lot better than expected! Toshi gave us a great tour and provided a lot of educational information on the forest and the cave. He provided helmets with head lamps, which we very necessary when climbing down into the cave attempting to avoid the ice. It was a great tour! I would definitely recommend. 👍🏽
Thank you so much for your kind comment. It’s now cherry blossom season, and the next week or so will be the best time to see them. Mount Fuji and cherry blossoms are a perfect match—truly an iconic symbol of Japan. We hope you’ll come and visit Mt. Fuji again. We’re looking forward to seeing you! 🌸
Please note that our tour was actually of the Fugaku wind Cave and not the nearby Naruwasa Ice Cave. Our guide, Toshi is a real outdoor enthusiast and Gabe is very interesting information on the flora and fauna throughout the tour. The forest is beautiful and looks line something out of a Studio Gibli movie. The wind cave is beautiful and I can't imagine going in without a guide. It was sad to see how climate change has caused a six foot drop in the caves permafrost level in the past few years. This is a good winter station tour, so be prepared for 5 degree weather in the cave.
Thank you very much for your wonderful comment. Aokigahara Forest is sometimes known for its negative image, but in reality it is also a place of great natural energy. Some people even visit the forest for therapy and healing. It is also a perfect place for forest bathing, a relaxing way to enjoy the atmosphere of the forest and reconnect with nature. Please come back again during the beautiful fresh green season. And when the weather becomes hot, a cool adventure in the ice cave will be waiting for you.
