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is a volcanic island in the middle of Sakumia, a brackish volcanic lake between Tottori and Shimane prefectures in
Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...
. Daikon Island is administered as part of Matsue, Shimane Prefecture. Daikon-jima takes its name from the daikon, the large, white
East Asia East Asia is a geocultural region of Asia. It includes China, Japan, Mongolia, North Korea, South Korea, and Taiwan, plus two special administrative regions of China, Hong Kong and Macau. The economies of Economy of China, China, Economy of Ja ...
n radish. The island was, however, known throughout Japanese history as "Tako-shima", meaning "
Octopus An octopus (: octopuses or octopodes) is a soft-bodied, eight-limbed mollusc of the order Octopoda (, ). The order consists of some 300 species and is grouped within the class Cephalopoda with squids, cuttlefish, and nautiloids. Like oth ...
Island." Daikon Island is a
shield volcano A shield volcano is a type of volcano named for its low profile, resembling a shield lying on the ground. It is formed by the eruption of highly fluid (low viscosity) lava, which travels farther and forms thinner flows than the more viscous lava ...
, a type of volcano composed of
fluid In physics, a fluid is a liquid, gas, or other material that may continuously motion, move and Deformation (physics), deform (''flow'') under an applied shear stress, or external force. They have zero shear modulus, or, in simpler terms, are M ...
lava flows. The island's highest elevation is a small volcano, Mount Ōzuka (). The base of the island composed of
basalt Basalt (; ) is an aphanite, aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the planetary surface, surface of a terrestrial ...
. The surface of the island undulates slightly, and consists of a lava plateau. The surface of the island consists of a 2-meter deep layer of
clay Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolinite, ). Most pure clay minerals are white or light-coloured, but natural clays show a variety of colours from impuriti ...
composed of
volcanic ash Volcanic ash consists of fragments of rock, mineral crystals, and volcanic glass, produced during volcanic eruptions and measuring less than 2 mm (0.079 inches) in diameter. The term volcanic ash is also often loosely used to r ...
. On the eastern end of the Daikon Island in the Osoe district there are lava tubes of up ). The lava tubes were formed by lava flows over the island. Lava tubes composed of secondary lava flows in the Terazu district of the island. They are designated Natural Monuments of Japan. Daikon Island was formerly used as a ranch to raise horses for the Emperor.
Ginseng Ginseng () is the root of plants in the genus ''Panax'', such as South China ginseng (''Panax notoginseng, P. notoginseng''), Korean ginseng (''Panax ginseng, P. ginseng''), and American ginseng (''American ginseng, P. quinquefol ...
and
peony The peony or paeony () is any flowering plant in the genus ''Paeonia'', the only genus in the family Paeoniaceae. Peonies are native to Asia, Europe, and Western North America. Scientists differ on the number of species that can be distinguish ...
cultivation have been active in Daikon Island since the
Edo period The , also known as the , is the period between 1600 or 1603 and 1868 in the history of Japan, when the country was under the rule of the Tokugawa shogunate and some 300 regional ''daimyo'', or feudal lords. Emerging from the chaos of the Sengok ...
. In 1981 a land bridge was built between Cape Ōmizaki in Matsue. The island is now connected to the city of Matsue by bus.


See also

*
List of Special Places of Scenic Beauty, Special Historic Sites and Special Natural Monuments To protect Japan's cultural heritage, the country's government selects through the Agency for Cultural Affairs important items and designates them as Cultural Properties of Japan, Cultural Properties under the Law for the Protection of Cultural Pro ...


References


External links

* Islands of Shimane Prefecture Volcanoes of Shimane Prefecture Volcanoes of Honshū Lake islands of Japan Pleistocene volcanoes {{shimane-geo-stub