The YouTube channel "Exploring Abandoned Mines and Unusual Places" is of a guy who films himself doing just that. The channel is interesting in and of itself, as these adventures into mines that are in slow motion collapse seem to be a very unnecessary risk to one's own life. The guy filming narrates his way through, commenting on what he sees. There are 10 years worth of video on this topic. The focus of this channel has nothing to do with the paranormal. That is what makes the following 2 videos even more interesting.
Start of video where whispering voices begin to be heard, seeming to come from all directions. The guy filming is unusually stoic, and nearly unaffected by being in a confined space with unknown sounds occurring.
Disturbing, strange sounds. That's exactly what I caught on video while filming and documenting the abandoned Waldeck Mine using the ThruNite TN12 flashlight. The Waldeck Mine is an abandoned gold mine located deep in a forested canyon in the high country. I went there on a stormy night in order to document the mine while reviewing and demonstrating ThruNite's excellent TN12 handheld flashlight. The abandoned mine itself is over 150 years old and still has a lot of awesome yet dangerous timbering in its furthest reaches. There are upper levels in the Waldeck Mine, but I only explored and documented the main haulage tunnel.
Start of video where something is thrown at towards the camera with no apparent source.
I embarked on a solo hike along Deadwood Creek to explore and document an abandoned mine and mill site. The mine tunnel I was able to locate was flooded with stagnant, scummy water. Further bushwhacking and exploration brought me to what I think was some kind of processing or assaying facility. It hasn't been operational in years and is now filled with lots of discarded furniture, junk, and poltergeists. Yes, poltergeists! At least that's my rational explanation for the startling experience I had there.