Izu Ooshima is a volcanic island in the Izu Islands and administered by the Tokyo Metropolitan government, Japan, lies about 100 km south of Tokyo, 22 km east of the Izu Peninsula and 36 km southwest of Bousou Peninsula. Ooshima Town serves as the local government of the island. The town was formed in 1955 by the amalgamation of six separate villages, which were:
Okada (岡田村) (north) Moto (元村) (west) Senzu (泉津村) (northeast) Nomashi (野増村) (west, south of Moto) Sashiki (差木地村) (south, with Mabushi) Habuminato (波浮港村) (southeast) Moto, which had been called Motomura (village) until then, became seat of the local government for the whole island as Motomachi (town).
Izu Ooshima, at 91.06 square kilometers is the largest and closest of Tokyo's outlying islands, which also include the Ogasawara Islands. Izu Ooshima forms part of the Fuji-Hakone-Izu National Park. Izu Ooshima is a stratovolcano.
Izu Ooshima is most famous for Mt. Mihara (764 meters), which last erupted in 1986. The volcano featured prominently in The Return of Godzilla, as the location in which the Japanese government entombed Godzilla. Mt. Mihara appeared again in the direct sequel, Godzilla vs. Biollante, in which Godzilla was released when the volcano erupted. Mt. Mihara and Izu Ooshima were also featured in the book Ring and the movie Ringu as pivotal locations for the story. Outside of fictional realms, the island is known for its Camellia Festival, Hanabi Festival, five black sand beaches, and numerous onsen.
Izu Ooshima is a popular site for tourists from both Tokyo and Shizuoka due to its close proximity to the mainland.
There are a number of ferries which leave from Takeshiba Sanbashi Pier, near Hamamatsucho, Tokyo. Ferries also leave from Atami in Shizuoka.
There are several flights per day from Ooshima Airport to Tokyo International Airport (Haneda) in Oota, Hachijojima Airport in Hachijojima and Choufu Airport in Choufu.