Who are the Knockers of Cornish folklore?

Knockers, Bucca, Tommyknockers; they're all mysterious spirits who live in mines. But who are they, and why do they warn miners of cave-ins? Find out in this week's episode! See the images on the blog post at http://www.icysedgwick.com/knockers/ Buy Icy at coffee at https://ko-fi.com/icysedgwick Tweet Icy at https://twitter.com/IcySedgwick Sign up for updates about episodes and get your guide to protecting your home using folklore at http://www.icysedgwick.com/fab-folklore Become a member of the Fabulous Folklore Family at https://www.patreon.com/bePatron?u=2380595