• A bull elk bugles in Yellowstone National Park

    Yellowstone

    National Park ID,MT,WY

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  • 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?

NPSbalsamrootDYK

Climate is one of the primary drivers of the physical and ecological processes that determine the distribution, structure, and function of ecosystems.