is an inhabited volcanic island in the Izu archipelago and borders Sagami Bay and the Pacific Ocean, off the coast of Honshu, Japan, east of the Izu Peninsula and southwest of Bà Âsà  Peninsula. As with the other islands in the Izu Island group, Izu à Âshima forms part of the Fuji-Hakone-Izu National Park. Izu à Âshima, at is the largest and closest of Tokyo's outlying islands, which also include the Ogasawara Islands.
The island is a stratovolcano with a basaltic composite cone, dating from the late Pleistocene period, between 10,000 and 15,000 years ago. It rises from an ocean floor with a depth of between . The island has a roughly circular coastline of approximately in length. The highest elevation, , is an active volcano with a height of . The mountain has been recorded to have erupted numerous times through history and is mentioned as far back as Nara period written records.
Major eruptions occurred in 1965 and 1986, each forcing a temporary evacuation of the inhabitants. The last recorded eruption was in 1990.
The island has been recognised as an Important Bird Area (IBA) by BirdLife International because it supports populations of Japanese wood pigeons, Ijima's leaf-warblers, Izu thrushes and Pleske's grasshopper warblers.
Izu à Âshima has a humid subtropical climate (Köppen climate classification Cfa) with warm summers and cool winters. Precipitation is abundant throughout the year, but is somewhat lower in winter than the rest of the year.
The island is administered by the à Âshima subprefecture of the Tokyo Metropolitan government. serves as the local government of the island.
à Âshima Town consists of the six traditional hamlets of Okata (岡ç°), Motomachi (å Âçº), Senzu (æ³Âæ´¥), Nomashi (éÂÂå¢Â), Sashikiji (å·®æ¨å°) and Habuminato (波浮港), with Motomachi as the administrative center.
Izu à Âshima 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 Pier, near Hamamatsuchà Â, Tokyo to Motomachi Port. Ferries also leave from Atami in Shizuoka to Motomachi Port. Both lanes are operated by Tà Âkai Kisen
There are several flights per day from à Âshima Airport to Chà Âfu Airport in Chà Âfu.
Mount Mihara and Izu à Âshima featured prominently in The Return of Godzilla, as the location in which the JSDF successfully trapped Godzilla after luring him to the crater, whereupon charges were detonated, sending him falling into the magma-filled volcano. Mt. Mihara appeared again in the direct sequel, Godzilla vs. Biollante, in which Godzilla was released when the volcano erupted.
Mt. Mihara and Izu à Âshima were also featured in Koji Suzuki's Ring and its film adaptation as pivotal locations for the story.
In the Pokémon franchise, Cinnabar Island is based on Izu à Âshima.
In the anime Vividred Operation, Izu à Âshima is the home of several protagonists.
The island has a peripheral role in The Dancing Girl of Izu by Yasunari Kawabata subsequently adapted for film multiple times.
Disturbance in the Wake, a time travel novel by S.A. Ison, takes place on à Âshima Island in the 14th century.