Tokyo topographic maps

Average elevation: 0 m

The island is a stratovolcano with a granitic composite cone, dating from the late Pleistocene period, between 10,000 and 2,000 years ago. The island has a roughly circular coastline, 88.3 kilometers in length, with an average diameter of eight kilometers. The highest elevation Mount Oyama (雄山, Oyama-san)…

Average elevation: 168 m

Average elevation: 27 m

Average elevation: 307 m

Average elevation: 399 m

Average elevation: 97 m

Average elevation: 228 m

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Average elevation: 60 m

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Average elevation: 5 m

Average elevation: 836 m

Average elevation: 34 m

Average elevation: 782 m

Average elevation: 45 m