Related Articles

Recommended Related Plans



Inazumi Underwater Limestone Cave (稲積水中鍾乳洞)

The Inazumi Underwater Limestone Cave was formed 300 million years ago in the Paleozoic era, and took its current form after being submerged in the Aso volcano eruption 300,000 years ago. It is one of the world’s more unusual underwater limestone caverns, replete with underwater stalactites, coral stones and helictites. It is possible to walk around and see inside of the caves. The sound of water trickling down with quiet echoes into the “reverb pond” and the sight of the beautiful green “emerald spring” are mysterious wonders not be missed.


Oita Pref. Bungoonoshi Miemachinakaduru 300 (OitaArea)

phone 0974262468

9:00-17:00 (extended business during The summer season)

Review of Inazumi Underwater Cave

TripAdvisor Traveler Rating
Reviewed:2019/05/13 Quite a long cave but there are better ones in Japan
The cave was formed something like 300 million years ago but in its present form, some 300,000 years ago. That in itself is quite impressive; however, the stalactites were a little disappointing...
Reviewed:2014/11/10 W-O-W
This cave is so interesting! Bring a GOOD jacket and get ready for wandering through this underground treasure trove. My friends walked quicker then I would have alone, I could have stayed longer! I...
Reviewed:2013/07/10 Spectacular underwater cave, absolutely Amazing!!
Inazumi Underwater Cave started over 300 million years ago, the cave formation began 300,000 years ago, and around 85,000 years ago the cave was submerged by the major eruption of Mt.Aso. In 1976...

Recommended Guide


Oita Pref. Bungoonoshi Miemachinakaduru 300 [map]
9:00-17:00 (extended business during The summer season)
open everyday
[Admission fee Friday] Adults1,300yen, Junior high and high school students 1,000yen, 4 years old to Elementary School Students700yen
Parking Lot
Credit Card
Not available
Temporary suspension:Closed until May 10, 2020 (Information as of May 8, 2020)
* Information may be changed, so please be sure to check the official information.

Information Sources:  NAVITIME JAPAN


          There is no Station nearby. There is no Bus Stop nearby. There is no Parking nearby. There is no IC nearby.
          From major stations / airports

          Nearby Tourist Attractions

          Nearby Restaurants

          Nearby Hotels

          Oita Areas


          A trip to Oita is tantamount to a long soak in the Beppu baths. The mountainous, coastal prefecture of Oita is renowned for having more onsen than any other prefecture in Japan, most of which lie in the city of Beppu on the west coast of Kyushu, recognizable by its pungent sulphuric aroma and the clouds of steam that puff up across the hillside. Away from the Beppu hot springs await mountains, waterfalls, and temples, so don’t hesitate to explore Oita a little further.