Kumage County topographic maps

Average elevation: 8 m

Average elevation: 52 m

The bedrock of the island is granite, so there are no active volcanoes. The island has an area of 504.5 square kilometres (194.8 sq mi) and is roughly circular, with a circumference of 89 kilometres (55 mi) and a diameter of 28 kilometres (17 mi). Its highest elevations are Miyanouradake (宮之浦岳), at…

Average elevation: 401 m

The island is of volcanic origin; however, unlike neighboring Yakushima, it presents a flat appearance, with its highest elevation at only 282 metres (925 ft) above sea level. The island has a length of 57 kilometres (31 nmi) and a width ranging from 5 kilometres (2.7 nmi) to 10 kilometres (5.4 nmi). The…

Average elevation: 14 m