1. A group of marine potholes in Hiranezaki
Sea Strange Rocks and Bizarre Stones

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.

Facility Basic Information

1465 Tochu, Sado, Niigata 952-2131
For inquiries
Sado Tourism Association Sado Tourist Information Center: 0259-27-5000
Transport Access
Ryotsu Port Approx 70 minutes by car
Nearest bus stop
Hiranezaki (Kaifu Line) Approx. 1 minute on foot from bus stop

Please take care near the edge, there is no fence.

Nearby Spots

Stores where you can eat and drink nearby