Iōtorishima

The southern Gusuku kazan (グスク火山, "Castle Volcano") is a lava dome located in the center of the two summits.

[3][4] The highest point of the island is at 212 m, which belongs to Iōdake-kazan; the highest of the Gusuku kazan is the Maedake (前嶽) at 189.3 m.[5] Sulfur was mined by the inhabitants for centuries[1] within the Kingdom of Ryukyu, and it was used as tribute to the Chinese Empire.

[7] In a series of eruptions and earthquakes from March to August 1903, all residents were temporarily moved 220 km to Kume Island, but were permanently relocated by June 1958; the final settlement had 86 inhabitants.

Administratively, the island belonged to Gushikawa on Kume-jima, but merged in 2002 with Nakazato to the city Kumejima.

Commons: Io-Torishima  - Collection of pictures, videos and audio files relating to the island.