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Native name: Japanese: 悪石島
View from the ferry "TOSHIMA". May, 2007
Location East China Sea

29°27′06″N 129°36′04″E / 29.45167°N 129.60111°E / 29.45167; 129.60111

Archipelago Tokara Islands
Area 7.49 km2 (2.892 sq mi)
Length 3.2 km (1.99 mi)
Width 2.5 km (1.55 mi)
Coastline 12.64 km (7.854 mi)
Highest elevation 584 m (1,916 ft)
Highest point Midake
Population 59 (as of 2004)
Ethnic groups Japanese

Akusekijima (悪石島?), is one of the Tokara Islands, a sub-group of the Satsunan Islands belonging to Kagoshima Prefecture, Japan. The island, 7.42 km² in area, has a population of 59 persons. The island can only be reached by boat as it has no airport, there is a ferry service twice per week to the city of Kagoshima on the mainland. Travel time is about 10 hours. The islanders are dependent mainly on fishing and seasonal tourism.


Akusekijima is located 38 kilometres (21 nmi) southwest of Nakanoshima. The island has an area of approximately 7.49 square kilometres (2.89 sq mi) with a length of about 3.2 kilometres (2.0 mi) and a width of 2.5 kilometres (1.6 mi).Most of the island is surrounded by steep cliffs.

The island is an andesitedacite stratovolcano formed by two summit crater, Biroyama (ビロ山?) 355.5 metres (1,166 ft) and Nakadake (中岳?). 464 metres (1,522 ft). Mitake (御岳山?) 584 metres (1,916 ft), the highest elevation on the island, is a lava dome. Lava flows in the northern portion of the island have been dated to 80,000 years ago. There has been no volcanic activity in historic times.

Its climate is classified as subtropical, with a rainy season from May through September.


Until 1624, the island was part of the Ryukyu Kingdom. During the Edo period, Takarajima was part of Satsuma Domain and was administered as part of Kawabe District. In 1896, the island was transferred to the administrative control of Ōshima District, Kagoshima, and from 1911 was part of the village of Toshima, Kagoshima. From 1946-1952, the island was administered by the United States as part of the Provisional Government of Northern Ryukyu Islands.

During World War II, on 22 August 1944, Tsushima Maru, a Japanese passenger/cargo ship, was sunk just outside Akusekijima’s northwest coast by torpedoes launched by the submarine USS Bowfin (SS-287) off this island, killing 1,484 civilians including 767 schoolchildren. Annual commemorations are held on the island and there is also a memorial museum.

Akusekijima drew attention during the Solar eclipse of July 22, 2009, which was the longest total solar eclipse of the twenty-first century, as the island was one of the closest inhabited areas to the location of maximum eclipse duration. Touted as was one of the best observation spots for the event, village officials and island residents were concerned about playing host to hundreds of people coming to view the solar eclipse. Akusekijima only has five small minshuku guesthouses, which can only accommodate up to 66 people, and water resources are limited as rainfall is the primary source of water.


Akusekijima is also famous for the masked god Boze (ボゼ?), the island deity. Islanders donning Boze masks come out during the annual lunar O-Bon matsuri. Protectors of the island and its natural assets, the Boze frighten small children to ensure their safety for the coming year.


  • National Geospatial Intelligence Agency (NGIA). Prostar Sailing Directions 2005 Japan Enroute. Prostar Publications (2005). ISBN 1577856511

External links

  • Official home page
  • Global Volcanism Program

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