1. Ryuodo Cave
Sea Strange Rocks and Bizarre Stones

Ryuodo Cave

Mysterious scenery in the Kotoura Caves

Just one among the rich variety of Kotoura caves, Ryuodo Cave is called "Sado's Blue Grotto," and is the largest lava rock cave on the island. Like the Blue Grotto in Italy, the sunlight creates a beautiful blue reflection and the waters glow brilliantly on days of mild weather and sea conditions. Sea kayak tours are available, providing participants with a chance to navigate into the cave and enjoy an otherworldly view.

Facility Basic Information

Kotoura, Sado, Niigata 952-0606
Transport Access
Ogi Port Approx 5 minutes by car
Nearest bus stop
Shukunegi Shinden (Ogi Line) Approx. 15 minutes on foot from bus stop

Kotoura Fishing Port is accessible on foot.
Ryuodo Cave is only accessible by boat or sea kayak, etc.



青の洞窟をモーターボートで楽しむ「青の洞窟を高速モーターボートで行く!琴浦洞窟 (竜王洞) めぐり)」はこちら(要予約)

Nearby Spots

Stores where you can eat and drink nearby