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Yellowstone National Park | by U.S. Geological Survey
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Yellowstone National Park

“...the whole face of the country was covered with herds of Buffaloe, Elk & Antelopes; deer are also abundant but keep themelves more concealed in the woodland. The buffaloe Elk and Antelope are so gentle that we pass near them while feeding, without appearing to excite any alarm among them...”

 

—Captain Lewis somewhere on the Missouri River, near the entrance of the Yellowstone River, Thursday, April 25, 1805.

 

Though the Lewis and Clark Expedition passed near what we now know as Yellowstone National Park, they were never know to venture into its hidden treasures of thermal features, geologic wonders, and vast communities of plants and animals.

 

Sixty-sever years after Lewis and Clark’s journey, Yellowstone became America’s first National Park, preserving this landscape for generations all over the world to enjoy. USGS has been working in Yellowstone for decades, where our scientists dedicate careers to the study and understanding of geology, volcanology, biology, geography, hydrology, and much more.

 

In photo: Late spring at Mammoth Hot Springs in Yellowstone National Park. Photo credit: Paul Cross, USGS

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Taken on May 14, 2005