1870: Exploring the subterranean passage known as "the Pigeon Hole" or "Pole na g-columb" through which the water passes from Lough Mask to Lough Corrib, County Mayo, Ireland

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Size: 3913px × 3712px
Location: Lough Mask, Ireland
Photo credit: © De Luan / Alamy / Afripics
License: Licensed
Model Released: No

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