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Mount Oakan
is a shield volcano located in Akan National Park in Hokkaidō, Japan. ==Geography and geology== Mount Oakan sits in the Akan caldera northeast of Lake Akan. The volcano rises some above the surrounding terrain. The top of the volcano is above sea level. The volcanic cone is some in diameter. There are three explosion craters at the summit. At at about , there is a fumarole.〔 The volcano is made mostly from non-alkalai mafic volcanic rock. The main rock type is andesite and dacite.
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