Inazumi Underwater Stalactite Cave

• Oita
• Sightseeing
• Activities
• Nature
• Spring
• Summer
• Autumn
• Winter

Inazumi Underwater Cave, located in Bungo-Ono City, is one of Japan's largest and most mysterious underwater limestone caves, formed about 300 million years ago in the Paleozoic era and submerged by the massive Aso volcanic eruption 300,000 years ago. Inside the cave, the crystal-clear water shines in a brilliant blue color, and the dynamic natural formations alongside countless stalactites illuminated beautifully by fine light-ups grant deep core emotion and surprise to global travelers. The temperature inside remains a comfortable 16 degrees Celsius throughout the year, offering an excellent master power spot to experience Earth's eternal history and great life force while being completely cut off from modern digital business.