Wednesday, February 26, 2014

Wednesday in Wyoming -- February 26, 2014

Have you heard the term 'desert varnish'?  That's what the dark staining on this cliff is called.  According to the National Park Service, desert varnish is created when bacteria oxidize manganese and iron and deposit it on the rocks.  I don't claim to understand how all that works, but I do know that it's beautiful. 

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