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.