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

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

Sump cave hi-res stock photography and images - Alamy

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

Uk diving helmet hi-res stock photography and images - Alamy

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

Caver swimming in deep water in cave Wales UK Stock Photo - Alamy

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

Uk diving helmet hi-res stock photography and images - Alamy

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

Sump cave hi-res stock photography and images - Alamy

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