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Photo courtesy of Neal Herbert/National Parks Service

1. Audio producer Jennifer Jarrett takes an audio sample at Mammoth Terraces in November 2014.  


HUNTER D’ANTUONO / Yellowstone Newspapers

2. An elk bugles near Gardiner just inside the park boundary last September. 

3. Mudpots bubble furiously in Yellowstone last spring. 

4. A raven puffs up and caws at tourists in the park last May.