Tokyo’s Nearest Volcanic Island Getaway

A short hop from the city by sea or air, this unique island location offers some spectacular views, rare landscapes and uncommon dishes.


by Melinda Joe


On a clear day, the view from the placid island of Izu Oshima makes me catch my breath. As we drive along the road between the villages of Nomashi and Mabushi, beyond the verdant slopes to our right that culminate in rocky beaches, a cluster of islands floats on the shimmering surface of the Pacific Ocean. On our left, we pass the striated rockface of the Senba Stratum Section, a sedimentary formation that was created by countless volcanic explosions and stretches for more than 800 meters.


“This is the view on our daily commute,” says Masashi Okada of the Oshima Tourism Association Secretariat, gesturing to the surreal stone expanse. “The oldest layer is 20,000 years old.”


Oshima is the largest of the Tokyo Islands that stretch south of Sagami Bay and fall under the administration of the Tokyo Metropolitan Government. A mere 120 kilometers away from the city center, Oshima is easily accessible–one hour and 45 minutes by jetfoil from Takeshiba Pier, or 25 minutes by plane from Chofu Airport.


The island was designated as a Geopark in 2010, with roughly 97 percent of the area protected under Japan’s Natural Parks Act. The unique landscape has been shaped by Mt. Mihara, the 764-meter volcano at the center of the island. One of Japan’s most active volcanoes, the mountain was revered in ancient times as gojinka-sama, literally “the fire of god.” Access to the caldera is restricted, but visitors can trek along the gentle trails that circle the crater’s edge.


Behind Mt. Mihara lies one of the island’s most striking features-—the Urasabaku “desert.” Formed by an amalgamation of volcanic ash and craggy scoria rock, its stark, black surface has an austere and alien beauty. According to Toshiro Nakabayashi, a certified guide at Izu Oshima Geopark, wild plants sprout when rain falls—thanks to the porous rocks that prevent seeds from being swept away by the harsh winds that scour the island.


Oshima’s complex geography, diverse ecosystems and unique history have given rise to a distinct and fascinating food culture. People began living on the island around 8,000 years ago. The early inhabitants took advantage of the bounty of the ocean, and by the late Edo period (1603-1868), the port town of Habu Minato was thriving as a fishing hub. While the island is also famous for its pristine sea salt, until the late 1600s most was shipped to the mainland as government tariffs, says historian Takayoshi Tokie, who researches ancient documents.


“Salt was not for ordinary people,” he tells me, explaining how the commodity’s rarity led to the invention of a fish sauce used to flavor dishes and preserve foods. The technique of preparing kusaya, one of Oshima’s most iconic fish delicacies, evolved out of the local fish sauce tradition. Typically made with horse mackerel, the fish are steeped overnight in an enzyme-rich brine the color of dark chocolate before being dried on nets and left to undergo lactic fermentation. The process gives the dish its characteristically pungent aroma and intense, umami-dense flavor.


At Zakoya Kiyomaru, a casual eatery on the west side of the island, I sample grilled kusaya, along with bekko-don, another local specialty. The dish consists of a bowl of rice topped with slices of white fish marinated in local soy sauce spiked with green chilies, which are often used in lieu of wasabi. The name of the dish means “tortoiseshell”—a reference to the speckled, translucent appearance of the fish. I also order ashitaba, a vigorous green vegetable that can be found virtually everywhere on the island.


The leaves come briefly blanched, doused in a slightly sweet soy-based sauce and dusted with roasted sesame seeds. Another way the vegetable is served in the region is as tempura—battered and deep-fried in camellia oil, one of the region’s most important staples, which is also used as skin and hair moisturizer.


The estimated three million camellia trees on Oshima are valued for more than their oil. The hardy plants flourish in the volcanic earth, protecting the island from strong winds as well as soil erosion. During the camellia festival from late January to the end of March, the more than 10,000 trees that grace Oshima Park and Tsubakihana Garden are in full bloom, electrifying the landscape with sprays of vibrant red, pink and purple blossoms.


“It’s one of the best seasons in Oshima,” says the tourism association’s Masashi Okada, a smile creeping across his face. “The colors are just so beautiful.”


From these lovely colors to the monotone, volcanic tones of the heights of Mt. Mihara and the emerald blues of the surrounding Pacific Ocean, there is much more to discover in this land of dramatic landscapes, starry skies and hidden culinary gems.


Photo Captions
-Oshima is graced with gorgeous views of the other Tokyo Islands (top). The topography of the island is incredibly varied, from volcano craters to this 800-meter striated rockface that borders the coastal road (center).
-Two local food favorites: bekko-don, a rice bowl of marinated white fish (bottom left) and grilled kusaya, a fermented fish dish (bottom right). The lush blossoms of camellia trees (bottom right).

Izu Oshima
If you are looking for something completely different from city life in Tokyo, I recommend Izu Oshima. Here you get to experience the ocean, lush forests, and a...
#green city#waterfront
Aogashima Island, Japan’s Smallest Village
358km south of Tokyo’s city center, Aogashima Island is home to Japan’s smallest village. The island is a famous spot for stargazing, bountiful nature, and its ...
#green city#Tokyo Gov SNS#travel
Tokyo’s Natural Wonders
Which part of Tokyo makes up over half of the city’s area? The area that makes up most of western Tokyo is called “Tama.” In Tama, visitors and residents alike ...
#green city#Tokyo Gov SNS
News, insights and stories on cosmopolitan Tokyo
Inspired by Tokyo barrier-free food bicycle-friendly business clean city convenient city cultural city design city diversity global city green city Made In Tokyo neighborhood nightlife Olympic Paralympics PR BOOK safe city smart city technology third place Tokyo basics Tokyo Gov SNS tradition transportation travel walkable waterfront
News, insights and stories
on cosmopolitan Tokyo
You might have missed...
Heiwa no Mori Park
I really like to run, so I find this park very convenient, just 5 minutes away from home. When I was in Mexico I used to...
#green city#Olympic Paralympics
Going for Gold, Together
In a historic initiative, Tokyo 2020 organizers ask the public for help in sourcing Olympic and Paralympic medals from “...
#Olympic Paralympics#PR BOOK
Tokyo Sightseeing Taxi Guidebook
Tour the city’s most famous sights in a comfortable door-to-door Tokyo Sightseeing Taxi. Specially-trained drivers provi...
#smart city#Tokyo Gov SNS#transportation
Komazawa Park
In Canada, parks don’t usually have so many attractions or facilities. This place is different because it was the site o...
#green city#Olympic Paralympics
New Legs for Aspiring Champions
Researchers at the University of Tokyo are working with Paralympic athletes in pioneering new 3D-printed prosthetics. ...
#Olympic Paralympics#PR BOOK#technology
Japan’s Leading Private Museum
One of Japan’s leading private museums, the Nezu Museum near Omotesando features a vast collection of Oriental antique a...
#cultural city#Tokyo Gov SNS
Walking from Meguro Station to Fudomae Station is a really nice view. Especially If you look up and not just at the peop...
Unique Event Venues Boost Tokyo’s Appeal
How would you like to hold your next convention at an art museum? Or in the green expanse of a traditional Japanese gard...
#business#global city#PR BOOK
Made in Tokyo: Kodokan Judo
Kodokan Judo began in 1882 at a temple in the Ueno area located in northern Tokyo. Its 22-year-old founder, Jigoro Kano,...
#cultural city#Made In Tokyo#Olympic Paralympics