Dr John Drake retired thoracic surgeon emerging from lava Sullivan Bay Santiago Galapagos Ecuador Pacific Ocean

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A lava tube is formed by lava whose outer surface cooled and solidified quicker than the inside which was still molten and flowing.

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Size: 5120px × 3406px
Location: Sullivan Bay Santiago Island Galapagos Ecuador Pacific Ocean South America
Photo credit: © Krystyna Szulecka Photography / Alamy / Afripics
License: Licensed
Model Released: Yes

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