The Celts believed that on the New Year's Eve (for them the Halloween was the end of the year) the border between the worlds of the dead and the alive is open, and the shadows of the dead visit the earth. In order not to become the victim of the dead, people made fires at home and dressed up as scary as possible - in animal skins and heads, hoping to scare away ghosts from the opened border. The spirits were served food to be satisfied and not come into the house.