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An open gunnis in a Cornish cliff, created hundreds of years ago by Cornwall's tin miners.
Cornwall Underground Adventures professional mine guide installing a caving bolt in a Cornish tin mine.
Mine Explorers emerging from an ancient tin mine on the cliffs of Cornwall.
Wheal Leisure, real name Wheal Owles, as used in BBC's Poldark TV Series
Cornwall Underground Adventures are spoilt for scenery in this stunning county. An epic sunset at an ancient cliff mine.
Cornish engine houses on the Cornish cliffs are an integral part of Cornwall's landscape.
A Cornish cliff near Cape Cornwall, home to countless passages, tunnels and stopes, carved out over centuries.
Cornwall Underground Adventures looking for unexplored shafts in Cornwall's tin mines
Stone walling around a deep mine shaft on the Cornish moors.
An adit in a Cornish tin mine. These tunnels are the gateways into the secret world under Cornwall.
Mine explorers abseiling deep in a Cornish tin mine near St. Just
Botallack's the Crown Mines engine houses are one of Cornwall's most famous landmarks.
The tin gardens on the north coast of Penwith host hundreds of holes and shafts.
Porth Nanven, Cot Valley St. Just. Home to hundreds of years of tin mining history.
Using a traverse line to cross a deep, narrow stope on a Cornish tin mine.
Exploring the dark underground spaces of a Cornish tine mine near St. Ives.