The Celtic year begins on the night of November 1 with the festival of Samhain. The Celts believed that on this night they had access to the inhabitants of the Otherworld and the parallel world of Sid (elven hill and gateway to the underworld).

People were afraid of spirits from the Otherworld on that day and avoided leaving their houses. For this reason, they dressed up in frightening costumes - also to avoid being recognized by the spirits of deceased ancestors.

For the Celts, the Samhain festival symbolized the last harvest. Summer was bid farewell with a fire and the dark half-year was welcomed. For this purpose, the village community gathered around a large fire into which they threw cattle bones. The bone fire was blessed by a druid. The families of the village re-lit a fire in their homes from this bone fire as a ritual act to strengthen the village community. Samhain is an ancestor festival. One adjusted now so gradually to the "contemplative time".