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Masato Koyama @UCU4tKJPHq1EUgtOJeaX254w@youtube.com

12K subscribers - no pronouns :c

I am a volcanologist/geologist of Shizuoka University, Japan

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I am a volcanologist/geologist of Shizuoka University, Japan. I upload movies mainly of volcanoes and other geological features.
火山学・地質学の視点からみた動画を提供します。