Nature and culture in Shimane’s remote islands
Far off the coast of Shimane Prefecture lies a cluster of islands that feel worlds away from the bustle of mainland Japan. The Oki Islands, designated a UNESCO Global Geopark, are a wonderland of dramatic coastlines, ancient forests, volcanic rock formations, and cultural traditions that have endured for centuries.
Separated from the mainland by about 50 kilometers of the Sea of Japan, the Oki Islands are not just a scenic destination. They are a living museum of geological history and human resilience. The landscapes here tell a story that began millions of years ago, while the islanders’ way of life reflects a deep connection to the sea and nature.
A UNESCO Global Geopark
The Oki Islands earned their UNESCO Global Geopark designation in 2013, recognizing their geological significance and commitment to preserving both natural and cultural heritage. The archipelago is divided into two main areas: Dōgo Island, the largest and most populated, and the Dōzen Islands, a group of three smaller islands: Nishinoshima, Nakanoshima (Ama Town), and Chiburijima.
Each island offers distinct landscapes and experiences, yet all share the same breathtaking volcanic origins. Towering cliffs, unique sea caves, coastal plateaus, and fossil-rich rocks make the Oki Islands a paradise for nature lovers and geologists alike.
Geological Wonders
The islands’ dramatic scenery was shaped by volcanic activity millions of years ago, followed by erosion from wind and waves. Some of the most striking geological sites include:
- Kuniga Coast (Nishinoshima): A rugged stretch of coastline featuring towering cliffs, natural arches, and the iconic Tsūtenkyō Arch, which frames the sea like a giant stone window.
- Rosoku-jima Candle Rock (Dōgo): A slender sea stack that, when viewed at sunset, appears to be a glowing candle on the water.
- Sekiheki Red Cliff (Chiburijima): Layers of crimson volcanic rock rising above the sea, offering a striking contrast against the deep blue water.
- Matengai Cliff (Nishinoshima): One of the tallest sea cliffs in Japan, dropping 257 meters straight into the ocean.
Rich Cultural Heritage
The Oki Islands are not just about stunning nature, they are steeped in history and tradition. Once a place of exile for emperors and political figures, the islands developed a culture that blends mainland influences with a fiercely independent spirit.
The Oki Shrine honors Emperor Go-Toba, who was exiled to the islands in the 13th century. Local festivals, such as the Gokaura Bull Sumo on Dōgo, showcase the community’s strong ties to tradition, while island crafts like salt-making, fishing, and lacquerware have been passed down through generations.
Outdoor Adventures
For active travelers, the Oki Islands offer countless opportunities for exploration:
- Hiking: Trails range from coastal walks to mountain climbs, such as Mount Daimanji on Dōgo, offering panoramic island views.
- Sea Kayaking: Paddle along dramatic coastlines and into hidden sea caves.
- Cycling: Quiet roads and scenic coastal routes make cycling an ideal way to explore.
- Diving and Snorkeling: Clear waters and abundant marine life make for unforgettable underwater experiences.
Island Life and Local Cuisine
Life on the Oki Islands moves at a slower pace. Fishing is central to the economy, and seafood is a highlight of any visit. Delicacies include:
- Rock oysters harvested in summer, known for their creamy texture and rich flavor.
- Sazae (turban shell) served grilled or as sashimi.
- Squid dishes, especially in Nishinoshima, where the catch is exceptionally fresh.
Other specialties include beef from Oki cattle, which graze freely on grassy hillsides, and salt produced using traditional methods.
Seasonal Highlights
The Oki Islands are beautiful year-round, each season offering unique experiences:
- Spring: Mild weather and blooming flowers make it perfect for hiking and cycling.
- Summer: Warm waters invite swimming, diving, and kayaking, while festivals bring lively island energy.
- Autumn: Clear skies and comfortable temperatures are ideal for photography and outdoor activities.
- Winter: A quieter, more contemplative time to enjoy the islands’ natural beauty without crowds.
Getting There
The Oki Islands can be reached by ferry or airplane:
- By Ferry: From Shichirui Port (Shimane) or Sakaiminato Port (Tottori), ferries connect to Dōgo and the Dōzen Islands. High-speed ferries and slower car ferries are available.
- By Air: Oki Airport on Dōgo Island has flights from Izumo and Osaka Itami airports.
Once on the islands, inter-island ferries and local buses connect major sights, but renting a car, bicycle, or scooter gives you more freedom to explore.
Why the Oki Islands Should Be on Your Japan Itinerary
Most visitors to Japan focus on cities like Tokyo, Kyoto, or Hiroshima, but the Oki Islands offer something entirely different, a raw, untamed beauty paired with a deep sense of history and community. This is a place where you can stand atop a cliff older than recorded history, paddle through crystal waters, and share stories with locals whose families have lived here for generations.
The UNESCO designation ensures that the islands’ unique geological formations, biodiversity, and cultural heritage will be protected for years to come, allowing travelers to experience a Japan that feels both ancient and alive.
If you are seeking an escape into nature, a chance to slow down, and an opportunity to connect with a side of Japan few outsiders see, the Oki Islands should be at the top of your list.
