アメリカ内務省のインスタグラム(usinterior) - 4月2日 06時07分

Today, the #Alaska #Volcano Observatory celebrates 25 years of monitoring and studying Alaska volcanos. These efforts have improved global understanding of how volcanos work and how to live safely with volcanic eruptions. The Observatory is a joint program of the #UnitedStates #Geologic Survey (which is an bureau within the Department of the Interior), Geophysical Institute of Alaska #Fairbanks, and the State of Alaska Division of Geological and Geophysical Surveys. #science #data #instacool #instagood #bestoftheday

[BIHAKUEN]UVシールド(UVShield)

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