This is Off Topic, amirite? I'm gonna gloss over some personal details and not explain what I was doing here (my business was legit) but I recently discovered a small mining operation that I'm unsure about. Access to the mine was very primitive. You follow a very marginal and steep trail. To get to the trail in the first place you have to scramble up a very nasty cliff. A rope would help but I think they didn't have one there for security purposes. There were ropes elsewhere on the trail to help with cliff climbing. You eventually get to the mine and it's about 8 guys working there. You climb down a shaft and then it kinda goes horizontal. The people there told me they were mining quartz (like I said, I had legit reason to be at their mine). They even gave me a little hunk of quartz. So quartz is definitely present. But I'm not dumb enough to believe that they're going to all this effort for quartz. Quartz is cheap. I'd love to know what they were actually digging for. The location was on the wall of a west coast glacial valley. The area has no history of precious metals that I'm aware of but there was a lot of coal nearby (at lower elevations). I can't figure out what these guys were digging for. Can TalkBass?