
Tsukahara Onsen Kako-no-Izumi
Experience highly acidic hot springs near a steaming volcano crater, offering a unique and therapeutic soak in a remote, atmospheric setting.

Highlights
Must-see attractions
Social
From TikTok & Reddit
Best Time
Fewer crowds, more serene soak

Tsukahara Onsen Kako-no-Izumi
Best Time
Fewer crowds, more serene soak

Highlights
Must-see attractions
Experience highly acidic hot springs near a steaming volcano crater, offering a unique and therapeutic soak in a remote, atmospheric setting.
"The outdoor hotspring is super nice. The temperature is not hot and just nice. The view is natural with occasionally some yellow and red maple tree leaves falling into the pool."

Bring Your Own Towel
Rentals are available, but bringing your own towel saves a few yen! :beachwithumbrella:
Lotion is Your Friend
The acidic water can dry out skin. Pack lotion to apply post-bath for comfort. :lotion_bottle:

Quick Facts
Hours
Rating
4.2 · 954 reviews
Type
Public Bath
Highlights
Discover the most iconic attractions and experiences

Outdoor Volcanic Bath
Outdoor pool area
Soak in naturally warm, acidic waters with stunning views of the steaming crater and autumn leaves.

Indoor Public Bath
Indoor bathhouse
Experience a traditional, small public bath with highly acidic waters, a unique therapeutic soak.

Volcano Crater Walk
Near the onsen
A short, atmospheric walk to witness the steaming volcanic crater up close.
Plans like a pro.
Thinks like you
Planning Your Visit
Embrace the Acidity
Timing is Key for Solitude
Best Times
Insider Tips
from TikTok, Instagram & Reddit
Bring Your Own Towel
Rentals are available, but bringing your own towel saves a few yen! :beachwithumbrella:
Lotion is Your Friend
The acidic water can dry out skin. Pack lotion to apply post-bath for comfort. :lotion_bottle:
Private Bath Option
On busy days, a private bath (¥2500) offers a more spacious and peaceful experience. :couplewithheart:
Rinse Before Soaking
Remember to rinse thoroughly before entering the baths; soap and shampoo aren't used in the pools. 🧼
Tips
from all over the internet
Bring Your Own Towel
Rentals are available, but bringing your own towel saves a few yen! :beachwithumbrella:
Lotion is Your Friend
The acidic water can dry out skin. Pack lotion to apply post-bath for comfort. :lotion_bottle:
Private Bath Option
On busy days, a private bath (¥2500) offers a more spacious and peaceful experience. :couplewithheart:
Rinse Before Soaking
Remember to rinse thoroughly before entering the baths; soap and shampoo aren't used in the pools. 🧼
Volcano Walk Fee
A small fee (¥200) is requested for the crater walk, though not always strictly enforced. :hiking_boot:
What Travellers Say
Reviews Summary
Visitors praise Tsukahara Onsen Kako-no-Izumi for its unique, highly acidic waters and beautiful, atmospheric setting, especially the outdoor baths with crater views. However, the remote location and potential for crowds on holidays can detract from the experience, and the water's drying effect requires preparation.
"It would be great on a quiet day, but we went on a public holiday and paid 500 for the inside bath but it the was no space in the small bath (already 10 guys elbow to elbow) so I had to give up. There area also outdoor baths but we were warned it was not very warm and we thought they were telling us it was closed, but it wasn't. Just a communication problem in Japanese.
For 2500 you can have a private bath, which might be the way to go on busy days.
They try to get ¥200 more to walk to the crater, but they doesn't seem enforced."
Douglas Aberdeen
"The outdoor hotspring is super nice. The temperature is not hot and just nice. The view is natural with occasionally some yellow and red maple tree leaves falling into the pool. The outdoor pool is cost 600yen and i think it is reasonable. I think the spring water is quite acidic as my skin is a bit dried after the bath. I recommend to bring a lotion to applied to prevent the driedness. Moreover, u need to bring ur own towel too otherwise u could rent one from the cashier."
yh loon
"The water is very special and the setting beautiful and atmospheric.
Note that you shouldn’t use soap or shampoo when rinsing beforehand."
AS
What People Like
What People Dislike
Frequently Asked Questions
🚇 🗺️ Getting There
Tsukahara Onsen is quite remote. The most common way is by bus from Oita City or Beppu Station, heading towards Tsukahara. From the bus stop, it's a short walk. Some visitors rent a car for easier access to this secluded onsen.
Yes, it is accessible by bus, but it's a less frequent route. Check local bus schedules in advance as services can be limited, especially on weekends and holidays.
The crater is located very close to the onsen facilities. A short, well-marked path leads you there, making it an easy addition to your onsen visit.
This onsen is often visited as a day trip or from nearby hotels that may not have their own hot springs. Staying directly at the onsen is less common, but it's a great option if you want a truly isolated experience.
Walking from the nearest town might be a significant distance, as Tsukahara Onsen is quite isolated. It's recommended to use bus services or a private vehicle.
🎫 🎫 Tickets & Entry
The indoor public bath typically costs ¥500. The outdoor bath is usually ¥600. Private family baths are available for a higher fee, around ¥2500.
Advance booking is generally not required for the public baths. However, on very busy days, especially holidays, it's wise to arrive early or consider a private bath if available.
Opening hours can vary, and it's best to check locally or online before your visit. They are typically open during daylight hours, but specific times should be confirmed.
Yes, there is an additional fee, usually around ¥200, to access and explore the steaming volcanic crater area near the onsen.
The Japan Rail Pass covers JR trains, but it does not cover local bus services to Tsukahara Onsen. You will need to pay for the bus fare separately.
🎫 ♨️ Onsen Experience
The water is highly acidic, which is known for its unique therapeutic properties. It can leave your skin feeling dry, so bringing lotion is recommended.
The outdoor bath is described as not very hot, but rather 'just nice' and comfortably warm, making it pleasant for a relaxed soak with natural views.
No, you should not use soap or shampoo when rinsing beforehand. The highly acidic nature of the water means these products are not used in the bathing process.
It's essential to bring your own towel, as rentals might be available but not always preferred. Also, bring lotion for your skin after bathing due to the water's acidity.
Due to the high acidity, individuals with very sensitive skin or open wounds should exercise caution. It's best to consult with a doctor if you have concerns.
📸 📸 Photography
Photography is generally allowed in the outdoor areas and around the crater. However, be respectful and avoid taking photos of other bathers in the public or private bathing areas.
The path leading to the crater offers dramatic views of the steaming vents and surrounding landscape. Capture the unique, otherworldly atmosphere.
Photography is typically not permitted inside the indoor bathing facilities to ensure privacy for all visitors.
A wide-angle lens can be useful for capturing the expansive views of the crater and natural surroundings. A phone camera is sufficient for casual shots.
There are no specific mentions of drone restrictions, but it's always advisable to check local regulations and be mindful of other visitors' privacy.







Social
from TikTok, Instagram & Reddit