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Nature of Tsushima

Nature of Tsushima

 Originally it is thought that it was approximately 5 million years ago that the Japanese Islands which were a part of the continent appeared as current bow-formed form after crustal movement.
 By crustal movement or drop of sea level of glacial epoch, the topography and shoreline of the Japanese Islands almost became current form approximately 20,000 years ago while changing variously.
 We were shut in in island, Tsushima located between continent and Japanese soil, and a certain thing became extinct, and a certain thing adapted itself to environmental change, and creatures which lost place to go accomplished evolution, and original ecosystem that the animals and plants of the Japanese Islands and continent did blend live was born.
 Ancient civilization occurred before long in China, and nation was created in Japan and the Korean Peninsula. People who belonged to cultures sometimes competed at the same time to be island of rikukyo where the animals and plants of continent origin inhabited if Tsushima was Japanese, and it was in island of border that sometimes interchanged.

Position of Tsushima

 If condition is good, in island where Tsushima (tsushima) floats in the Sea of Genkai opening in the Kyushu north, as for the shortest distance to Korea, approximately 49.5km, ferry route to Kyushu can face Korean land shadow at approximately 132km.


 In Tsushima, north and south approximately 82km, East-West approximately 18km, areas have area of the third place next to Sadogashima, Amami Oshima in island of Japan in approximately 709 square km (Geographical Survey Institute H16.4.1). As the total area of the Tokyo's 23 wards is 621 square km, we become bigger than it.

 From Kamitsushimamachiwaniura (kamitsushimamachi, the crocodile back) at the north end to Izuharamachitsutsu (izuharamachitsutsu) at the south end, one way takes approximately 3 hours by car, and the first one is surprising on size of island and steep mountain range.

 Because island soil was wide, and mountain was steep, ship was important means of transportation until Tsushima traversing way was opened in 1968 (Showa 43).

Short cogongrass gulf (asowan)

 Short cogongrass gulf of Rias coast opens in central part of Tsushima. By the topography which steep Yamaji performs sedimentation (or sea level rises) of Rias coast, and is enacted, it features complicated shoreline such as sawtooth.

 Short cogongrass gulf is known as good harbor where is natural than ancient times and is used as perfect Field of sea kayaking (kind of canoe) again now as nursery of pearl and fishery products.

 Mt. Eboshi (eboshidake) of Toyotamamachi can go to top neighborhood by car and is scenic spot that panorama of short cogongrass gulf can overlook from the mountaintop. (photograph: Gulf of short cogongrass aerial photograph)

Geological feature

 Geologic most of Tsushima lay thick in the bottom of the sea approximately 30 million years before it is called Tsushima province formation (in Tsushima province another name of Tsushima) and are sedimentary rock which there was.

 We are affected by underground magma activity partially, and granite is exposed to Uchiyama of Izuharamachi quartz porphyry basalt in Shiratake, Shiroyama, saw percent rock, ritsukameiwa of Izuharamachi, Mitsushimachi around mountain rising to a great height of Kamiagatamachi.

 We bake, and bedrock around the Uchiyama Basin is vinegared by heat of granite magma, and it is with forunferusu which is kenko and forms mountain ranges such as dragon excellent mountains (558.5m) appointed to arrow holder mountain (648.5m) and natural monument of the Tsushima highest peak. (photograph: Shiratake)

Animal of continent origin

 Because rain becomes ice by drop of temperature in glacial epoch tens of thousands of years ago and deposited on ground, it is thought that sea level dropped as for 140m.

 Creatures of continent represented by Tsushima lynx crossed overpass created by drop of sea level and the straits frozen hard and would come over to Tsushima. (photograph: Kamiagatamachi, Tsushima lynx)

 Tsushima became island again, and original ecosystem that creatures peculiar to animals and plants of continent origin and Japanese animals and plants, Tsushima did blend live was built afterwards by warming and rise of sea level. (photograph: dragon excellent mountain, Tsushima salamander)

The crossroads of migratory bird

 We can observe many wild birds at spring and time of autumn ferry that Tsushima is located the west of the Japanese Islands and is located in the middle of wild bird breeding places such as Russia, China and wild bird wintering place of Southeast Asias.

 Wild bird that Steller's sea-eagle or hooded crane are large in winter, rare bird of bird watcher appendix slaver such as mountain show bottles is observed every year for Golden Week of May.
(photograph: mountain show bottle)

 Recent growth of the internet allowed dispatch, joint ownership of wild bird information, and many people came to be able to enjoy bird-watching by price reduction of dejisuko (digital camera + field scope) casually again.

 Meeting of Tsushima wild bird was formed in 2005, and many rare wild birds came to be recorded more than before. (photograph: Steller's sea-eagle, shooting place: Kamitsushimamachi)

Plants in Tsushima

 Plant which is peculiar to Tsushima (in the world only in Tsushima) has unexpectedly few sima Sour Orange Ren or Tsushima funkia, but many continents system plant grows wild by the geographical condition in Tsushima.

 In addition, we are distributed over continent and Tsushima, but we are distributed over plant and Japanese soil and Tsushima not to be distributed over in Japanese soil, but there are plants not to be distributed over continent and presents aspect of island of overpass of creature distribution. (photograph: Scutellaria root tiger lily)

 Chionanthus retusus
 It is plant growing wild around Kamitsushimamachiwaniura, Tsushima-shi (the crocodile back) of continent origin. We make white flower bloom to cover the whole tree exhaustively and dye the entire temple white.

 For Golden Week of May, Chionanthus retusus festival is held and is full of many tourists.
 Alias nanjamonja, nataorashi, pus Terashi.

Method & guide guide who enjoys nature of Tsushima

 There are various kinds of methods to enjoy nature of Tsushima, but sea kayaking and scuba are recommended if we demand non-everyday pleasure. Stability is much higher, and even families can enjoy sea kayaking again than they are imagined generally as short cogongrass gulf is inland sea.

 In addition, with scuba, we can observe tropical fish and edasango, a large flock of wandering fish under the influence of warm Tsushima Current.

 Large outcrop of quartz porphyry is wonderful, and plant of continent origin and Japanese plant will climb blend natural monument, Shiratake (shiratake) doing live if we climb a mountain.

 Bird watching can enjoy autumn, winter, but possibility to meet with rare bird increases because innumerable migratory birds pass Tsushima around Golden Week of May.

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