• A bull elk bugles in Yellowstone National Park


    National Park ID,MT,WY

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  • Craig Pass Closed for the Season; Mammoth to Norris Closed Sept. 14-30

    The road linking West Thumb and Old Faithful is closed for the season—traffic should detour through West Thumb, Lake, and Canyon. The road from Mammoth to Norris is closed for two weeks—traffic should detour over Dunraven Pass. More »

Inside Yellowstone - About Our Hydrothermal Features





More Information

Geothermal Resources - from the NPS Web Site

Geyser Observation and Study Organization

Online Digital Image File - Hydrothermal Features Photos - Official Park Website

Old Faithful Geyser Live! - Live Online Video Feed - Official Park Website

Yellowstone Scientist Talk - Video Presentation on Geology by:
Geologist, Bob Smith, University of Utah

Yellowstone Scientist Talk - Video Presentation on Thermophiles by:
Tim Mc Dermott, Thermal Biology Institute, Montana State University

Wildlife Safety Video-Why You Should Never Approach Wildlife

Safety Information Every Visitor Needs to Know

Did You Know?

Yellowstone Wolf.

There were no wolves in Yellowstone in 1994. The wolves that were reintroduced in 1995 and 1996 thrived and there are now over 300 of their descendents living in the Greater Yellowstone Area.