• 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 »

S is for Snake

A rattlesnake perks up as if it were to strike.

The prairie rattlesnake is the only poisonous snake in Yellowstone. They are not very common so most people feel lucky if they see one.

 

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.