Best Sulfuric
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Hverir is a geothermal area within the Námafjall region of Iceland. It features intensely sulfuric mud pots created by subsurface volcanic activity. The bubbling, steaming mud displays vibrant colors due to mineral content and heat. This site is notable for its active geology and offers a visible de...
Bumpass Hell is a striking mudpot basin within Lassen Volcanic National Park. It’s notable for being the park's largest hydrothermal area characterized by intensely sulfuric steam and boiling mud formations. The area gained its name from Kendall Bumpass, who suffered burns during an encounter with t...
Sulphur Caldron is a Yellowstone National Park mudpot with a pH near zero, making it one of the most acidic natural water features in the United States.
Rotokawa is an active geothermal field northeast of Taupo, New Zealand, containing a sulfurous acidic lake and hosting a binary-cycle geothermal power station.
