#177 Mt. AsonhSep 28, 20241 min readUpdated: Oct 3, 2024Kumamoto Ken, Aso ShiMount Aso (阿蘇山, Asosan) is an active volcano in the center of Kyushu. Aso's ancient caldera ranks among the world's largest, with a diameter of up to 25 kilometers and a circumference of over 100 kilometers. (January, 2024)
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