USA: Yellowstone Caldera

USA: Yellowstone National Park & Grand Teton National Park

USA: Yellowstone National Park

Hiker Killed By Grizzly Bear in Yellowstone National Park

Watch Bears Chase Tourists Who Got Too Close in Yellowstone National Park

Wyoming Wilderness

USA: Yellowstone National Park

Article: Yellowstone National Park

The link below is to an article that looks at Yellowstone National Park in Wyoming, USA.

For more visit:
http://www.australiangeographic.com.au/outdoor/yellowstone-national-park-wyoming.htm