Ioki Cave
伊尾木洞
Over 40 species of fern cover the canyon walls of this lush green bowl, cut off from the bustle of the world by a cave entrance.

📜 Ioki Cave (伊尾木洞, Iokidō) is a 40-meter-long cave in Aki City, Kōchi Prefecture, Japan. Known for its Ghibli-esque scenery and over 40 species of tropical ferns.

Why Go

🌿 Lush green canyon with over 40 fern species
🌊 Three waterfalls and a green-blue pool
🗿 Spot fossilized shells in cave walls
🚶‍♀️ Enjoy a quiet, mystical 20-50 minute walk
🌡️ Consistent 20°C temperature offers a cool escape

Why Avoid

⚠️ Damp conditions, occasional snakes
👟 Rocky trail, sturdy shoes recommended

Tips

🥾 Bring sturdy shoes or borrow rain boots from visitor's center
📍 5-minute walk from Ioki Station

Cost

💰 Entry: Free

Last updated 1 day ago

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