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Billions of thermoacidophiles thrive in Sulphur Caldron. They convert the pool's hydrogen sulfide gas into sulfuric acid.
The sulfuric acid breaks soil and rock into mud, making this spring a very muddy home.
What is a Thermoacidophile?
Thermo = Heat
Acid = Acidic
Phile = Love
Microorganisms that "love" to live in an extremely hot, acidic environment are called "thermoacidophiles."
pH Scale Basics
If you have ever had "heart burn" from eating acidic foods and used an antacid to relieve the pain, you can easily understand pH basics.
"pH" means "power of hydrogen." Acids release hydrogen ions, and alkaline solutions remove them. Acids and bases neutralize each other.
Thermoacidophiles thrive in an acidic environment that would be deadly to humans. Sulphur Caldron's microbes live in a pool that is almost as acidic as battery acid!
Location. 44° 37.677′ N, 110° 25.997′ W. Marker is in Yellowstone
Other nearby markers. At least 8 other markers are within walking distance of this marker. Volcanic Landscape (here, next to this marker); Dragon's Mouth Spring (approx. 0.2 miles away); Mud Volcano (approx. 0.2 miles away); Cooking Hillside (approx. 0.3 miles away); Grizzly Fumarole (approx. 0.3 miles away); Mud Geyser (approx. 0.4 miles away); Churning Caldron (approx. half a mile away); Black Dragonís Caldron (approx. half a mile away). Click for a list of all markers in Yellowstone National Park.
Categories. • Environment • Natural Features •
Credits. This page originally submitted on , by Bill Pfingsten of Bel Air, Maryland. This page has been viewed 446 times since then and 56 times this year. Photos: 1. submitted on , by Bill Pfingsten of Bel Air, Maryland. 2, 3. submitted on , by Bill Coughlin of North Arlington, New Jersey. 4. submitted on , by Bill Pfingsten of Bel Air, Maryland. This page was last revised on June 16, 2016.