Ryusen-do Cave

Travel Guide - Ryusen-do Cave


Located at the foot of Mt. Ureira-san, Ryusen-do Cave is one of the three largest stalactite grottoes in Japan.
The cave is over 3,100 meters long, but the full picture of the cave is still uncertain and it is said that the total length of the cave would be over 5,000 meters.

Noteworthy is a small lake at the bottom of the cave, 120 meters deep, filled with crystal emerald green water called "Dragon Blue".

Opening Hours

  • 8:30 - 18:00 (May - September)
  • 8:30 - 17:00 (October - April)


  • No closing days

Access / Public Transport

  • 132 minutes from JR Morioka Station by the bus bound for Ryusen-do. Get off at the last stop.
  • 24 minutes from JR Omoto Station by the bus bound for Iwaizumi-ekimae. Get off at Ryusendo-mae Bus stop.
  • 12 minutes from JR Iwaizumi Station by the bus bound for Ryusen-do. Get off at the last stop.

Address / Location

* Please click each address to show the location.
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しゃほ。 せーせー@梧鼠之技 @SHAHO_maru - 2021-05-04
I want to go to RYUSEN-DO cave in Iwate prefecture. This cave have counted for the top three of great caves in Japa… https://t.co/qmeGemtTpo
Travel Japan @Travel21JPN - 2019-06-23
【Ryusendo (龍泉洞)】
'Ryusen-do Cave is known as one of Japan's three greatest limestone caves and has been designated,… https://t.co/waK1SW5Hb6
Erie K. ANDO @karstology - 2018-03-18
pH/EC handy meter calibration for the cave survey scheduled from next Monday to Wednesday. I’m going to Ryusen-do C… https://t.co/JN18R9nVIg
Guillermo Serralta @memo_serralta - 2015-01-07
Underground Lake - Ryusendo Calcareous Cave - Iwaizumi town - Japan - *explored* http://t.co/0hslOtzG8Q