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Image: Churning Caldron

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Description: Boiling lake in Yellowstone National Park.Once Churning Caldron was a cool spring covered with colorful mats of microorganisms. This all has changed after earthquakes in 1978-79 superheated the water and killed the microbes. This once cool pool now averages 164°F and in 1996, it began throwing water 3-5 feet.
Title: Churning Caldron
Credit: Own work
Author: Brocken Inaglory
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: https://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes

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