ナショナルジオグラフィックのインスタグラム(natgeo) - 4月11日 05時26分

Grand Prismatic Spring @ -10 fahrenheit
@michaelnicknichols //
Ordinary volcanoes generally occur along the edges of tectonic plates; supervolcanoes blaze directly through those plates, like a stationary torch burning blisters through a sliding sheet of steel. And the YELLOWSTONE TORCH, feeding heat toward preposterous eruptions, is the largest beneath any continent on Earth........."It all starts with heat,” according to Robert B. Smith, of the University of Utah, who has studied Yellowstone’s geology for five decades. -----> continue series @michaelnicknichols
Writing by David Quammen (@davidquammen)

YELLOWSTONE the battle for the american west
May 2016 National Geographic magazine

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