site for experimental and sounding rockets.

Geography

Nii-jima is unusual amongst the Izu Islands in that it has an elongated shape. Measuring approximately 11 km long by 2.5 km wide, it has a land area of 23.87 km². The island is made of eight rhyolitic lava domes in two groups at the northern and southern ends of the island, separated by a low, flat isthmus. The complex in the southern portion of the

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