Shane P. White / Tephra during volcanic eruption, Mount Yasur, Tanna Island, Vanuatu
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Espen Bergersen / Hverfjall is a tephra cone or tuff ring volcano in northern Iceland, to the east of Myvatn, Iceland. May 2016
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Espen Bergersen / Hverfjall a tephra cone or tuff ring volcano, northern Iceland. May 2016.
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Espen Bergersen / Hverfjall is a tephra cone or tuff ring volcano in northern Iceland, to the east of Myvatn, Iceland. May 2016
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Espen Bergersen / People walking along the rim of Hverfjall. Hverfjall is a tephra cone or tuff ring volcano in northern Iceland, to the east of Myvatn. Iceland, May 2016
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Shane P. White / Tephra during volcanic eruption, Mount Yasur, Tanna Island, Vanuatu
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Shane P. White / Tephra during volcanic eruption, Mount Yasur, Tanna Island, Vanuatu
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Shane P. White / Tephra during volcanic eruption, Mount Yasur, Tanna Island, Vanuatu
