According to some they are real.
This quote caught my eye,
You can’t live in this landscape and not believe in a force greater than you.
because I was reminded of this scene in Kingdom of Heaven when Orlando Bloom’s Balain recreates the burning bush with the spark from a well tossed stone.
Trying to explain the environment which a people had to survive in every day of their lives is probably how many beliefs about the supernatural began. Some see a god in a burning bush, others see mischievous elves in chunky rocks. Although I did like the lady who mediated the settlement with the invisible people. She’s got a big future in daytime TV.