Yeah, I remember the YouTube videos. I love abandoned mine exploration videos. You should definitely check out his channel and the many others. People do this all over the world. Some of it's kinda sketchy, real horror movie material at times, kind of the inverse of rooftopping. I enjoyed learning the lingo and reasoning behind everything. Mining had and has its own language just like computers and everything had a purpose and the people who do this kind of thing tend to know what they're talking about and interview a lot of people who really know what they're talking about.
I love TVR Exploring's mine videos. He doesn't do the youtube oversensationalize thing, and he hits all kinds of mines in the Sierra region. He's also bringing an old mine back online, and his series about that is a lot of nerdy fun for physical engineering types. https://www.youtube.com/c/TVRExploring
Seconding TVR Exploring! His videos are a breath of fresh air in today's clickbaity youtube landscape. He's easily the best abandoned mine exploration channel - I can hardly even watch any of the others any more.
