Guida
Okidomari is a historic port town and bay located in Yunotsu, Ota City, Shimane Prefecture, facing the Sea of Japan. It once served as a crucial hub for the export of silver produced at the Iwami Ginzan Silver Mine to both domestic and international markets. The area features a unique topography with a two-pronged valley-like structure surrounded by mountains, and its natural protection from the waves allowed it to flourish as a prosperous port. Today, the remnants of the historical town layout and the 'Hanaguri-iwa' rocks—which tell the story of the ancient silver ships once moored there—invite visitors to step back into a golden age of commerce.
The history of this area changed significantly with the rule of the Mori clan in the 16th century. When the Mori clan established full control in 1562, a new transport route connecting the Iwami Ginzan Silver Mine to the Sea of Japan was developed. Okidomari functioned as both a commercial port and a naval base, where silver brought by land from the mines was loaded onto ships to be sent across the world. By 1570, a fort was built at the entrance of the port, and a town with a distinctive rectangular land division was formed.
In the early 17th century, as the Iwami Ginzan Silver Mine came under the control of the Edo Shogunate, the silver transport routes shifted toward land routes through places like Onomichi and Osaka, yet the historical atmosphere of Okidomari remained deeply preserved. Even today, the 16th-century town layouts are maintained, and local shrines, established to pray for maritime safety, continue to pass down the region's rich history.
The greatest charm of Okidomari is the scenic landscape that allows you to feel the fragments of history firsthand. In particular, the more than 60 'Hanaguri-iwa' rocks, believed to have been used to moor the silver ships, are precious historical remains that testify to the area's former prosperity. Walking to the edge of the port offers a view of the island that once served as a fort. Other sites reflecting the history of defense, such as Kushijima Island and the ruins of Unomaru Castle on the cape, are scattered nearby. Within the settlement, you can observe the beauty of the historical town layout and the traditional earthen storehouses (dozo) that symbolize past wealth.
Okidomari is an open-air scenic area. You can enjoy the calm scenery of the Sea of Japan regardless of the season. On clear days, the integration of the blue sea and the historic townscape is particularly breathtaking. Visiting during daylight hours is recommended, as it is easier to observe the intricate details of the terrain and the 'Hanaguri-iwa' ruins, helping you better understand the historical context.
The primary way to experience Okidomari is through a leisurely stroll along the paths that once hosted the silver transport routes. Walking through the narrow streets of the settlement allows you to observe the structural layout of living spaces from the Edo period or earlier. Additionally, walking toward the coastline provides a sense of the natural rias coast topography and the protective role of the nearby islands.
Adjacent to Okidomari is the Yunotsu area, famous for its ancient hot spring (onsen) traditions. To deepen your understanding of the Iwami Ginzan Silver Mine, a visit to the nearby Ginzan Kaido (Silver Mine Road) or the historic townscape of Omori is highly recommended. These areas were essential components of the historic silver transport network.
As Okidomari is an outdoor scenic area with walking paths through residential settlements, comfortable walking shoes are highly recommended. Because of the coastal and mountainous terrain, it is wise to bring clothing suitable for changing weather. When exploring the local settlement, please be mindful that these are living areas; please remain quiet and respect the privacy of the local residents.