Overview

The Oki Islands—an isolated cluster of volcanic islands in the Sea of Japan—are one of Japan’s most extraordinary destinations for travelers seeking raw nature, ancient culture, and rural tranquility. Officially known as the Oki Islands UNESCO Global Geopark, the archipelago consists of four inhabited islands:

• Dōgo Island (Okinoshima Town)

• Nishinoshima

• Nakanoshima (Ama Town)

• Chiburijima (Chibu Village)

These islands are characterized by towering sea cliffs, dramatic rock formations, centuries-old shrine culture, and a lifestyle shaped by isolation and the sea. For thousands of years, the islands served as a place of imperial exile, retaining traditions, rituals, and landscapes untouched by mainland development.

Key Features and Highlights

UNESCO Global Geopark

The entire archipelago is recognized for its:

• Unique volcanic geological formations

• Rare ecosystems

• Cultural landscapes shaped by human life over millennia

Visitors can explore lava coastlines, sea caves, and unusual topography formed by ancient volcanic eruptions.

Dōgo Island – The Cultural Heart of Oki

Dōgo, the largest island, offers a rich blend of history and nature.

Tamawakasu-mikoto Shrine

One of the oldest shrines in the archipelago, known for:

• Sacred towering trees

• Ancient rituals

• Traditional wooden architecture

It serves as a spiritual center for the island communities.

Yao-sugi Cedar

A monumental Japanese cedar estimated to be more than 1000 years old.
Its twisted roots and towering height create an otherworldly atmosphere.

Jōdogaura Coast

A scenic rocky coastline with volcanic formations shaped like terraces and pillars.
Ideal for photography and quiet walks along the sea.

Nishinoshima – Home to the Dramatic Kuniga Coast

Nishinoshima is best known for one of Japan’s most spectacular coastlines.

Kuniga Coast

Features steep cliffs rising up to 250 meters above the sea.
A must-see for hikers.

Matengai Cliff

One of Japan’s tallest sea cliffs.
Hikers can walk along the ridge for sweeping views of the ocean and grazing horses.

Tsutenkyo Arch (Heavenly Bridge)

A massive natural stone arch created by erosion.
One of the iconic images of the Oki Islands.

Nakanoshima (Ama Town) – Island of Relaxation and Living Culture

Akiya Coast Sea Cave

A stunning sea cave accessible by sightseeing boat.
The opening frames the sea like a natural cathedral.

Hishiura Port Village

A charming port town offering:

• Small cafes

• Local markets

• A peaceful seaside atmosphere

Kiryū Shrine and Local Festivals

The island is known for its living traditions, including:

• Sacred dance rituals

• Seasonal festivals

• Community-led ceremonies preserved for centuries

Chiburijima – The Smallest and Most Serene Island

Sekiheki Red Cliff

A dramatic wall of red volcanic rock that rises over the sea.
One of the most visually striking geological features in the entire geopark.

Mt. Akahage Observatory

The highest point on the island.
Provides a panoramic view of all the islands of the Dozen group.

Nature and Outdoor Activities

Hiking

Popular routes include:

• Kuniga Coast Trail (Nishinoshima)

• Dangyō Waterfall Trail (Dōgo)

• Akahage Summit Trail (Chibu)

These trails offer views of cliffs, forests, wildlife, and island pastures.

Boat Tours

A must-do experience for viewing:

• Sea caves

• Sheer cliffs

• Wildlife including seabirds and fish

Boats operate from several ports depending on the island.

Swimming and Sea Activities

The waters around Oki are notably clear due to low river sediment.
Popular activities:

• Snorkeling

• Sea kayaking

• Stand-up paddleboarding

• Diving

Sandy beaches and rock pools make the islands attractive during summer.

Local Culture and History

Islands of Imperial Exile

The Oki Islands were historically used as places of exile for:

• Emperor Go-Toba (exiled in 1221)

• Emperor Go-Daigo (exiled in 1332)

Historic sites related to their exile remain, creating a rare link to Japan’s medieval political history.

Bull Sumo (Oki-gyu)

A unique traditional sport in which bulls compete head-to-head.
Unlike mainland sumo, the bulls fight each other, not humans.
Events are held several times a year and showcase rural Oki culture.

Food and Local Specialties

Rock Oyster (Iwagaki)

Large, rich oysters harvested from the islands’ clean waters.
Oki oysters are considered among Japan’s best.

Sazae (Turban Shell)

A popular seafood grilled or served as sashimi.

Oki Beef

High-quality local beef with excellent marbling.

Island Sake

Small breweries produce unique sake using local spring water.

Traditional Dishes

Look for:

• Flying fish broth

• Squid sashimi

• Seasonal seafood caught by local fishermen

Practical Information

Access

The islands are remote but reachable via ferry or plane.

By Ferry

From Shichirui Port (Shimane) or Sakaiminato Port (Tottori):

• Ferries: 2.5 hours to 4 hours

• High-speed boats: about 1–2 hours

Services connect all major inhabited islands.

By Plane

Flights operate from:

• Izumo Airport

• Itami Airport (Osaka)

Arrive at Oki Airport on Dōgo Island.
From there, inter-island ferries connect the remaining islands.

Getting Around

Transport options differ by island:

• Rental cars

• Rental bicycles

• Local buses (limited schedules)

• Sightseeing boats

Planning ahead is essential in this rural destination.

Best Time to Visit

• Spring: Mild temperatures and fresh greenery

• Summer: Ideal for swimming, boat tours, and clear sea views

• Autumn: Comfortable climate and colorful foliage

• Winter: Quiet atmosphere, though seas can be rough

The islands are enjoyable year-round, but summer and autumn offer the best conditions.

Accommodation

Options include:

• Traditional ryokan

• Small guesthouses

• Ocean-view hotels

• Minshuku (family-run inns)

Facilities range from simple to upscale, but advance booking is recommended.

Related articles

Official Website

https://www.town.okinoshima.shimane.jp/www/genre/1427250040757/index.html

Great Accommodation Site

Agoda

Expedia

Booking.com

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