Markings carved in the Creswell Crags caves near Creswell, England, were long overlooked as idle graffiti. Then a couple of visitors noticed they had distinct formations. Hayley Clark and Ed Waters of the Subterranea Britannica society were on a recent cave tour when they recognized that these were witches’ marks, designed to ward off evil. A new tour of the caves highlights what’s believed to be one of the largest gatherings of ritual protection marks in the country.
