Been there, done that, different time and place.

Try doing it in a cave, without light or sound, and the flashlight you are carrying no longer works. No cave spirit on that trip. We did it at night, and you'd be amazed at how bright the night sky is when you've been in complete darkness for about 6 hours. Fortunately we used a cave that had only two directions, but a lot of breakdown clutter and a lot of corners.