Dōgashima Tensōdō

Dōgashima Tensōdō is a sea cave in Japan stretching approximately 147 meters with three entrances positioned on the south, east, and west sides. The cave was carved out by marine erosion of tuff rock formations over many centuries.

The cave formed through marine erosion of tuff rock over centuries and was designated a Japanese natural monument in 1935. This official protection recognized its geological importance and ensured its preservation.

The cave draws photographers who capture the shifting water colors and light effects created by the natural opening in its roof.

The cave is accessible only by boat departing from Dogashima, allowing for a guided visit lasting about 20 minutes. It is best to visit during calm water conditions and to check boat schedules ahead of time.

A large circular opening in the cave ceiling allows sunlight to enter, casting varying shades of blue and green in the water below. This natural light feature creates a constantly changing visual experience that shifts with the time of day and weather conditions.

Location: Nishiizu

GPS coordinates: 34.78269,138.76617

Latest update: December 8, 2025 21:01