Ryusendo Ryusendo Ryusendo


©AFLO, Hideki Nawate

Ryusendo is one of Japan's three largest limestone caverns. Ryusendo is famous for its deep underground lakes with beautiful emerald-green water. The cave and its rare species of bats were designated a Natural Monument by the Japanese government. The total confirmed length of the cave is 3,600 meters and the accessible length is 700 meters. Currently 8 underground lakes have been discovered and 3 of them are opened to the public. Exploration of the caves is still ongoing.

  • Address

    1-1 Kannari, Iwaizumi, Iwaizumi-cho, Shimohei, Iwate

    Local map

  • Entry fee

    Adults (including high school students) 1,000
    Elementary and junior high school students ¥500

  • Opening Hours

    8:30-17:00 (* From May to September: 8:30-18:00)

  • Closed


  • Website


  • Best Season

    All year

  • Point

    The temperature inside the caverns is uniformly 10℃ year round, so a light jacket or long-sleeved shirt is recommended even during hot summer days.

  • Nearest Station/IC Access

    Take a local bus at "Omoto Station" on the Sanriku Railway Company's Kita Riasu Line and get off at "Ryusendo" (about 45 minutes).

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Other spots near RyusendoWithin 50 km

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