![](http://www.alamy.com/thumbs/6/4DBDCB9A-EB21-478D-BEF3-F8D7F3063A30/2DA8WPP.jpg)
Colorful thermophilic bacteria living in the hot water of Sunset Lake in the Black Sand Basin, Yellowstone National Park, Wyoming, USA.
Size: 5400px × 3602px
Photo credit: © Jon G. Fuller/VWPics / Alamy / Afripics
License: Licensed
Model Released: No
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