• Steam rises off of the colorful Mammoth Hot Springs Terraces. Photo courtesy Jacob W. Frank

    Yellowstone

    National Park ID,MT,WY

Green Dragon Spring

Steam rises from this hot spring which emerges from a small cave.
 

Except on warm summer afternoons, steam frequently fills the cavern of this intriguing hot spring. Visitors must wait patiently for a glimpse of the sulfur-lined cave and boiling green water.


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