Masato Koyama @UCU4tKJPHq1EUgtOJeaX254w@youtube.com
12K subscribers - no pronouns :c
I am a volcanologist/geologist of Shizuoka University, Japan Suscribe Rss feed
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。