アメリカ内務省のインスタグラム(usinterior) - 5月7日 00時53分

Grand Prismatic Spring in #Yellowstone #NationalPark is the largest hot spring in the United States and the third largest in the world. It's almost 370 feet in diameter and 121 feet deep. Its vibrant color is the result of thermophilic (heat loving) organisms living along the edges of the steaming pool. This unique ecosystem is delicate and dangerous. To protect it and yourself, stay on the boardwalks when visiting and take the #YellowstonePledge: go.nps.gov/YellowstonePledge. Photo @yellowstonenps by Manish Mamtani (@mmamtani, www.sharetheexperience.org). #usinterior #findyourpark

[BIHAKUEN]UVシールド(UVShield)

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