Mother and daughter standing next to a cave opening. Surtshellir cave, Hallmundarhraun lava field, West Iceland.

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Approximately a mile in length, Surtshellir is the longest cave in Iceland. For a long time, Surtshellir was the longest known lava tube in the world. Eiriksjokull glacier in the background.

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Size: 5120px × 3413px
Location: Surtshellir cave, Hallmundarhraun lava field, West Iceland.
Photo credit: © Bjarki Reyr / Alamy / Afripics
License: Licensed
Model Released: Yes

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