Staircases To Nowhere

You're miles deep in the woods, no signs of civilization around you. Suddenly you enter a clearing and there stands a staircase. And nothing else. You start to approach and suddenly you feel such dread and terror you just want to run. Then you realize everything is silent. No birds, no wind, no sound but your panicked breathing. You turn and run.

Sounds like a great beginning for a scary movie, right? But people are saying this is real, not fiction. Isolated stairways to nowhere in the middle of the wilds.