A deep mine thats in pretty bad shape these days. I recently saw a you tube video of some “boys” and there 4x4s going deep in this mine. I was astonished when I saw this and what they were walking past and under. Broken beams from partial cave ins probably some questionable air too. They were in very deep. If you decide to enter a mine portal and have no history or information on it you are taking a big big risk. Don’t do it.