A group of marine potholes in Hiranezaki
A spectacle off Hiranezaki Coast formed by rough sea of the Sea of Japan
Thousands of round holes can be seen on the slope of rocks stretching approximately 500m on Hiranezaki Coast, situated to the north of Senkakuwan Bay. This is the largest group of potholes in Japan, formed by the whirl of sea water, and these potholes are designated as Japan's natural monument. Pebble can be seen in the holes, and those pebbles whirl around in the turbulence of waves and accelerate erosion. Hot water is bubbling up from the sea bed offshore, and that is a renowned spot popular for divers.
- 1465 Tochu, Sado, Niigata 952-2131
- Contact Information
- 0259-27-5000（Sado Tourism Association）
- Transport Access
- Ryotsu Port Approx 70 by car
- Nearest bus stop
- Hiranezaki（Kaifu Line） Approx. 1 minutes on foot from bus stop
- Please take care near the edge, there is no fence.
Points of interest near A group of marine potholes in Hiranezaki
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