Inazumi Suichuu Shonyuudou, located in the scenic Bungo-Ono City of Oita Prefecture, boasts one of Japan's largest underwater limestone caves. With a consistent temperature of 16°C year-round, it serves as a refreshing retreat for visitors, offering a serene atmosphere rich with natural beauty. This fascinating cave, formed over 200 million years ago, features stunning rock formations, underwater stalactites, and a plethora of unique geological structures. Visitors can explore its depths on foot, immersing themselves in a magical realm that evokes a sense of tranquility.

In addition to cave exploration, Inazumi Suichuu Shonyuudou provides various recreational services, including the adjacent Inazumi Hakusan River Camp Village, which offers camping facilities and outdoor activities like snorkeling and scuba diving. The on-site dining facility, Meisuitei, serves delicious local cuisine, enhancing the overall experience. Whether you're seeking adventure or relaxation, Inazumi Suichuu Shonyuudou is an exceptional destination for nature lovers and thrill-seekers alike.