You walk until you come a clearing in the woods.  There is pond here, filled by a little waterfall, to one side of you.  Notice that there is a small opening behind the waterfall.  A little cave. Something seems to be glowing there, behind the water.  Move closer and you can see the glow is coming from several dancing little lights.  One of the lights comes forth from the little cave.  It flies through the water and towards you.  you have no fear.  Just pleasant curiosity about this beautiful little light.