This is something that often beats my imagination and reasoning. Paranormal activities are beyond scientific explanation but I've watched documentaries where some sort of scientific devices were used to record paranormal activities in deserted places. I'm not sure whether I believe it but think I'm more fascinated.
I remember one night I was listening to my local radio and a woman called in to tell her story. She married a man without meeting any of his family. After a couple of years together with a child already, she was bent on meeting them so he gave in. When they got to his village, just a few blocks from his family home, he directed her there and said he wanted to get some things for his family first. That was the last time she ever saw him. Getting to the house with her child, everyone there thought she was crazy. They told her that the man she talks about is long dead. They took her to his grave behind the house.
That night was creepy for me and I just had many question in my mind.