Ryuodo Cave

Beautiful Scenery Insta-worthy Outdoor Activities

Ryuodo Cave is the largest lava rock cave on Sado Island of Niigata Prefecture. It is one of the Kotoura caves on the island, it is also sometimes called “Sado’s Blue Grotto.” This nickname comes from the color of the water: on clear days with mild weather, the reflection of the sunlight hitting the water creates a stunning shade of blue. There are kayak tours to the cave on which visitors can actually go inside and enjoy the views, and there are scuba diving spots nearby as well.

1.0 Hour
Telephone Number
Postal code
Kotoura, Sado City, Niigata
新潟県佐渡市琴浦 琴浦洞窟
Method of payment
Recommended season
May, July, August, September
Admisson Fee
JPY0 / Adult

There is no fee for the actual entry into the cave; however, due to the cave only being accessible by sea, a boat ticket to the cave is required.

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