Extreme Onsen Experience
On this tour, you will hike the active volcano of Mount Adatara, then jump into a natural hot spring and enjoy coffee and snacks. Being able to both climb a mountain and soak in hot springs is a one-of-a-kind experience rarely seen even in Japan. This is a fantastic opportunity to both exercise and relax at the same time! More information: https://fukushima.travel/blogs/visiting-the-most-extreme-wild-onsen-in-japan/100 Note: For safety reasons, this tour is only available from spring-early autumn (approximately from May to November, depending on the year), when there is no snow on the mountains. Thank you for your understanding. Depending on the day, this activity might available in English or Japanese. Please contact us if you would like to hire an interpreter.
Days of Week
Enjoy the magnificent scenery of nature - an open-air bath experience awaits you at the end of your trek!
Participants with tattoos are also welcome!
Soak in the highest-volume wild onsen in Japan! Nicknamed 'Extreme Onsen' due to the immense volume of natural hot spring water and the remote, rugged terrain of the mountains, this adventure is not for the faint of heart.
Pickup / Checkin
Dropoff / Checkout
8:40 - 9:00
Reception / Meeting
You'll meet your guide at cafe&activity nowhere in Numajiri, Inawashiro.
9:00 - 9:10
You'll be driven to the trail starting point.
9:10 - 10:10
You will hike to the source of Numajiri Onsen, traversing volcanic terrain to reach the onsen river nested in the mountains. Before departure and during the hike, you will be guided by a professional guide.
10:40 - 11:10
Extreme Onsen Experience
After the climb, relax while bathing at the source of Numajiri Onsen.* Afterwards, take a break to indulge in coffee and tea confectionery. *Please enter the onsen in swimwear.
11:10 - 11:50
The path to climb down may change depending on the weather.
11:50 - 12:00
You'll be driven from the trail starting point back to cafe&activity nowhere in Numajiri, Inawashiro.
Arrival at cafe&activity nowhere in Numajiri, Inawashiro.
Checkin Times / Locations
Getting to cafe&activity nowhere: Please note that there are no buses or trains that will take you directly to the meeting spot, so we urge participants to check how to get to the cafe&activity nowhere in advance. There are taxis available at Fukushima Station and Koriyama Station (no reservation required). If you are traveling from a smaller station, please book a taxi in advance just in case using a taxi app or ask your accommodation provider whether they can arrange for a taxi for you. Alternatively, please let us know if you need assistance and we will help you book a taxi. Morning reservations (Meeting at 8:40 a.m.): Travel by car or taxi (there are no buses available from Inawashiro Station to cafe&activity nowhere at this time). Noon reservations (meeting at 1:00 p.m.): We suggest traveling by car or taxi, if possible.
Checkout Times / Locations
- Climbing guide fee
- Pick-up/drop off to and from the trailhead
- Coffee & sweets
- Accident Insurance
- This trek takes approx. 3 hours.
- Please bring a swimsuit and towels with you (read more under 'What to Bring')
- Up to 8 people.
What to Bring
- Comfortable shoes and clothing for hiking (no sandals, skirts, etc.)
- Backpack, hat, hiking shoes, sunglasses
- Towels (both handtowels to use while climbing and bigger ones for after bathing), raincoat or waterproof wind-breaker jacket in case of sudden rain
- Swimsuit & sandals (for participants who wish to enter the hot spring)
- Sunscreen & insect repellent
- Gloves (military or non-stick gloves), trekking poles
8 days before to 17:00
3 days before to 17:00
2 days before to 17:00
1 day before to 17:00
After 17:00, 1 day before