One of the most often-repeated myths is that people found guilty of witchcraft were rolled down Slieau Whallian, a hill near St John's, in a barrel. However this is a 19th-century legend which comes from a Scottish legend, which in turn comes from a German legend. It never happened. Separately, a witchcraft museum was opened at the Witches Mill, Castletown in 1951. There has never actually been a witches' coven on that site; the myth was only created with the opening of the museum. However, there has been a strong tradition of herbalism and the use of charms to prevent and cure illness and disease in people and animals.