Virtual Guidebook to Yellowstone and Grand Teton National Parks
West Thumb Geyser Basin
Yellowstone National Park, Wyoming
The small but interesting fumarole area at West Thumb. Bluebell Pool and Seismograph Pool.
Fishing Cone hot spring, just under the waters of Lake Yellowstone. The Black Pool, now deep blue due to a change in temperature.

Fullscreen Versions

Next: Jackson Lake