|Fee:||Adults JPY 1,600, University Student JPY 1,200, School Children JPY 1,000, Elementary School JPY 800 Yen. |
T. Nishida, M. Ota, T. Zotsuka, A. Sugimura, A. Fujii, T. Haikawa, K. Yoshimura, M. Noda ():
Geology and Speleology of the Inazumi-yama District. Mie-machi, Ono-gun, Oita Prefecture, Japan,
Journal of the Speleological Society of Japan, Volume 2
K. Yoshimura, K. Urata, H. Schwarcz, D. Ford (2003): U-series dating of a speleothem from Inazumi Cave, Oita Prefecture, Japan, J. Ion Exchange, 14 (Suppl.), 225-228,2003.
|Address:||Inazumi Limestone Cave, Mie Town, Tel: +81-974-26-2468.|
|As far as we know this information was accurate when it was published (see years in brackets), but may have changed since then.
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|1976||discovered by cave divers from the .|
|1977||opened to the public.|
Inazumi suichu shonyudo is a water cave with many sumps. It was discovered only 30 years ago by cave divers. After two sumps the cave divides into two branches, the left one is dry and developed as a show cave, the right branch is waterfilled with several more sumps. Both branches are about 200m long.
The cave entrance is the spring of a small river, which produces 30,000 to 40,000m³ per day. It is a tributary of the Nakatsu river.