Explore the underground depths of the 175 million-year-old limestone caves
Kami City, northeast of Kochi City, is home to one of Japan’s three largest limestone caves forged over 175 million years. Designated as a Natural Monument, Ryuga Cave is approximately 4 km long, 1 km of which is open to the general public. In 2019, colored lighting, projection mapping, and music were installed throughout the main tunnel, adding an additional dimension of wonder to this geological formation. For those who are looking for a slightly more active experience, try the Adventure Course tour that involves both safety gear and a guide (reservation is required). The temperature in the cave tends to stay the same year-round so it feels warm in the winter and can be enjoyed even on a rainy day. Ryuga Cave is situated about 40 minutes from Kochi City or 20 minutes from Kochi Ryoma Airport by car.