Oki Islands — UNESCO Geopark Cliffs & Sea Caves

Oki Islands (隠岐諸島) are a remote archipelago in the Sea of Japan, 40–80km north of mainland Shimane. The islands form a UNESCO Global Geopark showcasing volcanic and geological history spanning 600 million years. The dramatic coastline features sheer cliffs, sea caves, rock pillars, and unique rock formations created by volcanic activity and ocean erosion.

The main islands (Dogo Island and the Dozen Islands) preserve isolated culture and traditions distinct from mainland Japan, including Oki bull sumo and ancient folk songs. The isolation created unique ecosystems with endemic species. Crystal-clear waters attract divers; rugged landscapes draw hikers; and cultural preservation appeals to those seeking off-the-beaten-path Japan.