I don't know why but YouTube recommended an abandoned mine video so I watched it. Then I started to watch a few more and I came to this video.
This guy is not a ghost hunter (his video are all about mines) so I don't if he's fucking with his viewers. I find this video pretty interesting. He goes into a mine to review a flashlight, I don't why but he does. Jump to 12:10 and turn your speakers up. It's creepy.
I found another one. This one looks fake. Jump to 7:34.