• A bull elk bugles in Yellowstone National Park

    Yellowstone

    National Park ID,MT,WY

There are park alerts in effect.
hide Alerts »
  • Craig Pass Closed for the Season; Mammoth to Norris, Expect 30-minute Delays

    The road linking West Thumb and Old Faithful is closed for the season—traffic should detour through West Thumb, Lake, and Canyon. More »

A is for Arachnid

A blackwidow climbs upon her web.

All spiders are arachnids. The Black Widow Spider is one of the arachnids that lives in Yellowstone.

 

Did You Know?

Upper Geyser Basin Hydrothermal Features on a Winter Day.

Yellowstone contains approximately one-half of the world’s hydrothermal features. There are over 10,000 hydrothermal features, including over 300 geysers, in the park.