Cave diver with line reel in sump underwater passage Wales UK Stock Photo - Alamy

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Cave spelunker water wales hi-res stock photography and images - Alamy

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Cave spelunker water wales hi-res stock photography and images - Alamy

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Sump cave hi-res stock photography and images - Alamy

Cave spelunker water wales hi-res stock photography and images - Alamy

Cave spelunker water wales hi-res stock photography and images - Alamy

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Cave spelunker water wales hi-res stock photography and images - Alamy

Cave spelunker water wales hi-res stock photography and images - Alamy