'Witches' marks' found in British cave network

The "witches' marks" are scribed into walls and ceilings of the caves, 

over dark holes and large crevices 

[Credit: © Creswell Heritage Trust]

They were discovered at Creswell Crags, Nottinghamshire, and are believed to be the biggest concentration of protective marks found in British caves.

The "apotropaic" marks were scribed into the cave surface as they were thought to keep evil spirits coming from the underworld.

Originally thought to be graffiti, they have now been reclassified.

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