Lava tube Gruta das Torres. Pico Island, an island in the Azores in the Atlantic Ocean. (Editorial Use Only)

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Photo credit: © DanitaDelimont.com / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: archipelago, attraction, azores, cave, danita, das, delimont, gruta, ilha, lava, martin, mid-atlantic, pico, portugal, ridge, torres, tourist, tube, tunnel, zwick