Blue lagoon of natural hot spring at "Caldeira Velha" where people swim in warm water in Sao Miguel island, Azores, Portugal

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Blue lagoon of natural hot spring at "Caldeira Velha" where people swim in warm water in Sao Miguel island, Azores, Portugal

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Size: 5234px × 3489px
Location: Portugal
Photo credit: © Cícero Castro / Alamy / Afripics
License: Royalty Free
Model Released: No

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