Wikipedia
Nii-jima
is a volcanic Japanese island in the Philippine Sea. The island is administered by Tokyo Metropolitan Government. It is one of the Izu Seven Islands group of the seven northern islands of the Izu archipelago, and is located approximately south of Tōkyō and south of Shimoda Shizuoka Prefecture. The island is the larger inhabited component of the village of Niijima Village, Ōshima Subprefecture of Tokyo Metropolis, which also contains the larger, neighboring island of Shikine-jima and the smaller, uninhabited Jinai-tō. Nii-jima is also within the boundaries of the Fuji-Hakone-Izu National Park.
On the southern tip of Nii-jima, there was formerly a launch site for experimental and sounding rockets.