| The "witches' marks" were often carved near entrances to buildings |
Members of the public are being
asked to help create a record of ritual markings on buildings that were
once believed to ward off evil spirits.
The symbols were believed to offer protection when belief in witchcraft and the supernatural was widespread. But heritage agency Historic England says too little is known about them.
This Halloween it is calling for people to document the marks, which can be found in medieval houses, churches and other buildings, most commonly from around 1550 to 1750.