Yellowstone National Park: Geysers
902 بار تماشا شده
توضیحات ویدیو
With over half the world's geysers, Yellowstone offers tremendous opportunities to see geology in action. Explore the mechanics of geysers, their role in the park's history and what they can teach us about the world in which we live.
اضافه شد در
12 می 2016
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