Cave Paintings

I am sitting in a cave, scared.
It is cold, damp and dark.
Every Winter solstice, the sun’s rays illuminate the wall so that the figures appear to dance.
I’ve tried it with flashlights, spotlights- but it has to be sunlight on this specific day.
I say it’s a magic spell, cast by a long-dead shaman.
Light peeks in through the cave’s entrance… and then it gets darker.
I hear thunder.
Damn. Awful time for a rainstorm.
Except… there’s no rain.
It gets darker, the figures dance, and I hear chanting.
Raising my spear, recognizing faces- I rejoin my tribe.