Yellowstone National Park - Steve Bumbaugh
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Sour Lake Drink

Sour Lake Drink

The bison didn't seem to mind the putrid, green, sulpher smelling water, but I would not recommend you taking a drink.

According to Montana State University:
Sour Lake, named for its acidic or "sour" water, may look like a pleasant swimming hole, but its water would burn your skin like battery acid. Most of its acid comes from microorganisms that create sulfuric acid as they consume sulfur. These microorganisms also give the lake its color.

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