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Green Spring, in the Black Sand Geyser Basin in Yellowstone National Park. Sign for the thermal feature Royalty Free Stock Photo
YELLOWSTONE NATIONAL PARK, WYOMING - JUNE 9, 2017: Green Spring of the Emerald Group in the Black Sand Basin in Upper Geyser Basin Royalty Free Stock Photo
   
   
   
   
   
Green Spring, in the Black Sand Geyser Basin in Yellowstone National Park. Sign for the thermal feature
   
   
   
   
   
   
   
Green Spring, in the Black Sand Geyser Basin in Yellowstone National Park. Sign for the thermal feature.

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