Natural SceneryIconic Landmarks
Ioki Cave
Ioki-odo
A natural sea cave revealing landscapes from tens of thousands of years ago.Explore this spot
Guide7 min read
Ioki Cave is a natural sea cave located in Aki City, Kochi Prefecture. This cavern was formed by wave erosion during an era when the surrounding area was part of the sea.
What makes it special
Natural Sea CaveFern CommunitiesNatural FormationsHistorical LandscapesKochi Nature Walks
About Ioki Cave
- Experience a natural time machine and witness a landscape from tens of thousands of years ago.
- Prioritize safety: Always wear sturdy walking shoes or hiking boots for your exploration.
- Observe the Ferns: Enjoy the rare sight of over 40 species of ferns growing in a single community.
- Natural Artistry: Pay close attention to the unique sea cave walls and the flowing water.
- After Rain Tip: The path can be slippery after rainfall; bringing waterproof boots is highly recommended.
Weather forecast
Mon
8/3
33°/28°
99%
Tue
8/4
31°/26°
30%
Wed
8/5
34°/26°
32%
Thu
8/6
31°/26°
94%
Fri
8/7
30°/25°
100%
Sat
8/8
32°/25°
76%
Sun
8/9
30°/24°
71%
Tips
Payment
Cash or PayPay (for guided courses)
English Support
Limited (signs/guides may have limited English)
Reservation
No reservation required for general exploration
Clothing
Wear sturdy walking or hiking shoes (Sandals are not recommended)
Essentials
Rubber boots are useful if visiting after rain
Accessibility
Not wheelchair accessible due to unstable terrain
Etiquette
Do not collect plants; please take all trash with you