Fumaroles

English: Fumaroles are steam emissions from the earth, commonly associated with volcanoes.

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  Kawah Ijen, Indonesia
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  Mount Redoubt, Alaska
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  Fumaroles escape through Fourpeaked Glacier covering Fourpeaked Volcano in Alaska
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  Námafjall, Iceland
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  Fumaroles (right) in caldera of Poás, Costa Rica
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  Halemaʻumaʻu Crater, Hawaii
• Time-lapse video of Halemaʻumaʻu Crater, Hawaii
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  Campi Flegrei, Italy
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  Fumaroles (left) on Mount Tambora, Indonesia
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  Mud pools and steam vents of the Gunnuhver geothermal area on the Reykjanes Peninsula, Iceland
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  Sulfurous fumaroles, Vulcano, Italy
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  Fumarole at Rincón de la Vieja Volcano National Park, Costa Rica
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  A fumarole in Yellowstone National Park, Wyoming that is releasing gas
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  Sampling gases at a fumarole on Mount Baker in Washington, United States