Yellowstone: Top Photos

Geysers, bison herds, and wild landscapes that teach kids the power of nature

Opal Pool, with Twin Buttes beyond, in the Midway Geyser Basin, Yellowstone National Park, Wyoming, USA
Opal Pool in the Midway Geyser Basin, with Twin Buttes in the distance — one of the park's quieter thermal features, easy to walk past without realizing you're standing next to one of the more beautiful pools in the basin. © Opal_Pool_YNP2.jpg: Acroterion derivative work: Gaendalf, CC BY-SA 3.0, via Wikimedia Commons

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