Akka Cave

Japan's longest limestone cave - A mysterious labyrinth that is still not fully explored

Japan’s longest limestone cave. Its full extent has still yet to be fully explored, but the areas that have currently been charted are known to extend to a total length of approximately 23.7km, a truly massive scale. The cave also appears to be growing year by year. It is a labyrinthine cave that is unusual in Japan, with more than forked paths along the way. It is a source of interest to scholars and researchers and a source of excitement for those seeking a taste of adventure and exploration. It is also designated as a special natural treasure.


Only the first 500m section is open to the public, which takes approximately 40 minutes to walk along at a leisurely pace. Visitors soon get into explorer mood when they borrow helmets and torches at the entrance. Here you can truly experience what a limestone cave is all about, from the dim lighting to cold temperatures, as well as low ceilings, slippery paths and bats. It is also fun to search out some of the limestone formations that have been given names, like the “penguin,” and the “one-horned rhino.”


Come and delve into the depths of this mysterious labyrinth that still hides countless secrets inside its many chambers!

General Information

Address
岩手県下閉伊郡岩泉町安家字日蔭
Prices
Adults (high school students and above): 1,000 yen
Children (Junior-high and elementary students): 600 yen
Pre-school age children: Free
Opening Times
9:00-16:00
Closures
Closed during the winter
Directions
20 minutes by car from Ryusendo, heading towards Kuji
Word-of-mouth
Reviews (TripAdvisor)

Contact

Contact
Iwaizumi Economic and Tourism Exchange Division
Telephone Number
0194-22-2111