Get off at Ioki Station on the Dosan line and take a short walk, or make a 40-min drive from Kochi Ryoma Airport, and you will arrive at this natural wonder. Ioki Cave, formed about 3 million years ago from marine erosion, is heavily populated by not one, but seven varieties of vibrantly green fern.
At first, the cave may seem relatively small. However, you’d be remiss to stop there. There’s no need to hold your curiosity back. Head into the cave, along the stream of water flowing beside you, and you will soon see the sunlight peering in from above at the other end.
Once you reach the exit, the cave transforms into a beautiful gorge. Continue along this gorge as it winds around and you’ll eventually find yourself in front of a series of waterfalls. A trip well worth-it, don’t you think?