What did Yellowstone National Park look like before it became wonderland?
The Yellowstone region today is wonderland. It is full of spectacular geysers and colorful hot springs, home to lakes and ...
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Photographer David Guttenfelder on Yellowstone
David Guttenfelder is one of six photographers who contributed to National Geographic magazine's special issue on Yellowstone ... a sheepherder and two Akbash guard dogs. Constant vigilance ...