Concept

Bonin Islands

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Ogasawara Subprefecture

Ogasawara Subprefecture is a subprefecture of the Tokyo Metropolitan Government in Japan. The subprefecture covers the Bonin and Volcano Islands and three isolated islets (the "Ogasawara Archipelago") and is coterminous with the village of Ogasawara. The subprefecture covers and has a population of 2,415 people. It maintains a main office on Chichijima and a branch office on Hahajima, the two permanent settlements in the islands. (The SDF base on Iwo Jima is supported separately, although still notionally part of the subprefecture and village's jurisdiction.

Chichijima

is the largest and most populous island in the Bonin or Ogasawara Islands. Chichijima is about north of Iwo Jima. in size, the island is home to about 2120 people (2021). Connected to the mainland only by a day-long ferry that runs a few times a month, the island is nonetheless organized administratively as the seat of Ogasawara Village in the coterminous Ogasawara Subprefecture of the Tokyo Metropolitan Government. Together with the Volcano and Izu Islands, it makes up Japan's Nanpō Islands.

Iwo Jima

Iwo Jima, now officially romanized Iōtō (硫黄島, "Sulfur Island"), is one of the Japanese Volcano Islands, which lie south of the Bonin Islands and together with them make up the Ogasawara Archipelago. Together with the Izu Islands, they make up Japan's Nanpō Islands. Although south of Tokyo on Honshu, Iwo Jima is administered as part of the Ogasawara Subprefecture of the Tokyo Metropolitan Government. Only in size, the island is still volcanic and emits sulfurous gases. The highest point of Iwo Jima is Mount Suribachi at high.

Hahajima

Hahajima, Haha Jima, or Haha-jima is the second-largest island within the Bonin or Ogasawara Islands SSE of the Japanese Home Islands. The steeply-sloped island, which is about in area, has a population of 440. It is part of Ogasawara Village in Ogasawara Subprefecture, which is approximately south of Tokyo, Japan. The highest peaks Hahajima are Chibusayama (lit. Breast Mountain), approximately , and Sakaigatake, . It is part of an archipelago that includes Chichijima approximately to the north and the nearby smaller islands such as Anejima and Imōtojima and Mukōjima.