| The use of a crystal ball is attributed to the druids to foretell the future. |
| The druids had their sanctuaries on islands, and Mona was their headquarters. |
| The druids presided over human or animal sacrifices that were made in wooded groves or crude temples. |
| Roman reports of the druids mention ceremonies being held in sacred groves. |
| Other classes of druids performed ceremonial sacrifices of crops and animals for the perceived benefit of the community. |
| The Druidic movement originated among the Romanticist ideas of the ancient druids that had begun to be developed in the 17th and 18th centuries. |
