Grutas da Cal are man-made caves in Santa Maria island, caused by the extraction of calcareous rock. Azores islands, Portugal

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Size: 5120px × 3413px
Location: Santa Maria island, Azores, Portugal
Photo credit: © G. Avila / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: azores, cal, calcareous, caves, da, digging, extraction, grutas, holes, hollow, hollowing, interior, islands, limestone, man, man-, maria, portugal, quarry, rock, santa, tunnel, whitewash