The Advent Spiral is a beautiful and reverent tradition at SWS and many Waldorf schools.   A spiral is created with greenery and decorated with seasonal objects at one end of the Rawhide building.  All in the room sing as one by one, the teacher leads the student into the spiral, where they light their candle and place it along the spiral on their way back out.  The Advent Spiral is a representation of us going into the dark times of winter and exploring the darkness within ourselves, finding the light within, and bringing it out into the world.

Additional information here.