Kannojigoku Hotel
寒の地獄旅館かんのじごくりょかん
A cold spring and a wood-fired hot bath at a historic mountain ryokan in Kuju
Day Use
YesThe wood-heated hot bath (main indoor bath) is open Friday to Tuesday, 10:00 to 15:00, last entry 14:00, closed Wednesday and Thursday. The separate cold-spring sauna course runs Thursday to Tuesday, 9:00 to 18:00, last entry 16:00 (Thursdays open from 11:00, Tuesdays may close earlier), closed Wednesday. Both can also close for occasional extra maintenance days beyond this schedule.
The wood-heated hot bath alone is 700 yen for adults and junior/senior high schoolers, 500 yen for elementary age and under. The cold-spring sauna course is a 2-hour session, cash only: 2,500 yen for adults and high schoolers, 1,000 yen for junior high, 500 yen for elementary age and under. Cold-spring sauna guests can also use the gender-separated hot bath for free on days it's open.
Bathing & Water
Uses natural hot spring water
The about-page names the spring 単純硫黄冷鉱泉 (simple sulfur cold mineral spring) while the dedicated onsen-info page calls it 単純硫化水素泉 (simple hydrogen-sulfide spring); kept the dedicated onsen page's classification.
Open-air outdoor bath
Applies to the private family baths (半露天/semi-open-air), not the main indoor bath.
Enclosed indoor bathing area
Sauna room of any kind
Cold water plunge bath, typically used after sauna
Bathing Arrangements
A private bath you can reserve for yourself or your group
Reserved for overnight guests only, per the price page.
Private onsen bath in guest rooms, for overnight guests only
Rooms have only a washbasin (no toilet, no bath); all bathing is in the shared 互久楽湯, family baths, or cold spring.
Shared bathing area for all genders
A bathing garment (yuami-gi, 湯浴み着) or swimsuit is required for mixed bathing.
Policies & Services
Welcomes children and families
Inferred from published child/elementary-age pricing tiers; no explicit kids policy statement found.
A restaurant or dining room open to visitors, not only meals for overnight guests
On-site or nearby parking available
Views
RiverHighlights
Drinking Spring
Lukewarm BathPrograms
About
Kannojigoku is unusual in the best way: it runs a cold hydrogen-sulfide spring in summer (July to September) alongside the hot baths, and soaking in near-icy sulfurous water is genuinely bracing. The lodge has a strong old-Japan feel, crackling firewood, dim corridors, home cooking around the hearth, and the remoteness (three-plus hours from Oita airport by bus) keeps the crowds away.
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Last updated October 5, 2026