I know, I know. It’s not black. That is the name, though, of this very hot pool.
It used to be black. Lower water temperature allowed thick mats of dark green and brown thermophiles (heat-loving microorganisms) to grow in the pool, causing it to appear black. In 1991, the water temperature rose, killing the thermophiles. It also erupted as a geyser that summer and several times the following winter. Black Pool is now a quiet and beautiful pool.
Posted from Old Faithful Inn, Yellowstone National Park
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I love the colours of the water sand surrounding area.
Interestingly, I published a 2007 photo of this same pool last year: http://exit78.com/black-pool/
I checked out the previous post and I still prefer this angle and the colours.
I agree. I think I paid a little more attention to the composition of the photo this time, plus I used a polarizing filter that eliminated a lot of the surface reflection so that the photo captured more from the deep part of the pool.
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