Tensodo
Shizuoka Prefecture's Tensodo cave, popularly known as the blue cave, is a recognized historical site. The tunnel is 147 meters long and is lit by sunshine that enters via a hole in the roof, making for excellent photography. The cave can be reached by boat, such as with Dogashima Marine's cave adventure cruise.
One of the country's natural wonders is the Dogashima Tensodo cave. The beautiful white limestone tower has a natural ceiling window that allows you to gaze directly up into the sky. The sun streaming through and reflecting on the hidden waterway beneath produces a surreal, enchanting beauty unlike any other. There are three openings to the cave: one in the east, one in the west, and one in the south. The pleasure boats go as far as the cave's center from the south outlet. There is a large round hole in the cave's roof in the center, and the way light shines into the cave via this hole is mysteriously lovely. In 1935, Tensodo was recognized as a Japanese Natural Monument. You can take a boat excursion to tour the cave and the picturesque shoreline, which is guaranteed to be an unforgettable experience.
Opening Hours: 8:15am-4:30pm
Open every day of the year
Admission: Adult- ¥1,200, Child- ¥600
Address: 410-3514 Nishina Dogashima, Nishi-Izu-cho, Kamo-gun, Shizuoka (Google Map)