Wales is where we will go for Day 6 of Christmas traditions around the world.

The celebration of Mari Lwyd (caroling with dead horses) is not a particular date.  However it does take place between Christmas and late January. One person will dress as a horse with an actual horse skull and is usually accompanied by a group of people.  The group will go to homes singing carols in exchange for food and drinks.  This Welsh tradition is thought to stem from ancient Celtic rites.

No one really knows when or where the Mari Lwyd custom started, but the tradition is supposed to bring good luck to anyone who participates.