I've been there and must say, something is different about the place. As you walk through it you see the effect it has had on the trees and the house which is located there. No one lives in the house. It seems to be a state of sliding down into a small ravine located at the center of the spot. But it is prevented from doing so by the steel cables which are restraining it.
People pay to walk through it and experience it effects.
Just a thought it may justify your attention. It wasn't until last week when I had my first experience at seeing it. It happened when our hunting party was heading up to a camp site at night, the moon was out which lit our way, but the mules we rode knows the trail by heart. As we were about 2 miles from camp, the mules came to a dead stop and were acting really strange, our hunting dogs also cowered and refused to lead the way as they usually did. As we made our way around a pile of boulders, we all noticed that the whole area around us were well lit except for what looked like a wall of black hanging in the middle of nowhere.