The shortest day and the longest night of the year, it has been recognized as a significant turning point in the yearly cycle since the late Stone Age. The ancient megalithic sites of Newgrange and Stonehenge, carefully aligned with the solstice sunrise and sunset, exemplify this.The reversal of the Sun's ebbing presence in the sky symbolizes the rebirth of the solar god and presages the return of fertile seasons. This liminal festival is followed by eleven days of extended celebration (known as Yuletide) in Germanic tradition, from which the Twelve days of Christmas was later derived in Christianity. In Old England, the Twelfth Night of Yuletide marked the end of the period which began at Samhain. Krampus, the Lord of Misrule, symbolizes the world turning upside down at this time of year.