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Onekotan Island ((ロシア語:Онекотан); Japanese 温禰古丹島; Onekotan-tō, occasionally Onnekotan-tō, ) is an uninhabited volcanic island located near the northern end of the Kuril Islands chain in the Sea of Okhotsk in the northwest Pacific Ocean. Its name is derived from the Ainu language for "large village". ==Geology== Onekotan is roughly rectangular, with a length of 42.5 kilometers, and a width ranging from 11 kilometers to 17 kilometers. It has an area of 425 km² 〔(【引用サイトリンク】title=International Kuril Island Project（IKIP） )〕 The island consists of two stratovolcanos connected by a relatively flat isthmus. * Krenitsyn -((ロシア語: Креницын ); Japanese 黒石山; ''Kuroishiyama'') with a height of 1,325 meters is the prominent caldera at the southern end of the island. This volcano was named after Captain Pyotr Krenitsyn of the Imperial Russian Navy.〔(【引用サイトリンク】title=Global Volcanism Program )〕 The mountain rises from a depth of from 600 to 900 meters, and contains a deep central caldera lake, called Tao-Rusyr Caldera. The central peak of this "island within the island" is actually the highest point on Onekotan Island * Nemo -((ロシア語:влк Палласа); Japanese 根茂山; ''Nemoyama'') with a height of 1,019 meters is the peak to the north. It has two nested subsidiary calderas, with the cone of Nemo Peak rising in the southwest end of the youngest caldera and a crescent-shaped crater lake partially filling the northeast part. Onekotan Island is separated from the neighboring islands by the Fourth Kuril Strait, Yevreinov Strait, and Krenitsyn Strait. The neighboring islands are Makanrushi Island, with a 1170 meters volcanic peak, to the northwest of Onekotan Island; and Kharimkotan Island, with a 1210 meter high volcano, to the south. Onekotan still has an active volcano with the most recent eruption, in 1952, forming a small lava dome on the island's coast. There are chars in Lake Chyornoye, one of the two lakes on Onekotan, located at the northern end of the island. Image:Onekotan-Kurile-Islands.jpg|Mount Krenitsyn on Onekotan Island Image:Onekotan Island, Kuril Islands, Russian Federation.JPG|Snow cover highlights the calderas and volcanic cones that form the northern and southern ends of Onekotan. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Onekotan」の詳細全文を読む スポンサード リンク
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