There are times that you decide to NOT read the signs...
So yeah, that is me at the end of this tunnel. I just walked in... It was pretty dark down there, and I kind of didn't think about the fact that I could have cornered a raccoon or cougar... So next time, I might just have to throw a rock down the tunnel before I just go walking down there... But I wasn't that concerned, as I would have been hard to look at as there would be bright light behind me, and I would have just backed out of the tunnel.
As I continued to walk to the end, it got colder and darker which felt good on this hot day. Even though it says "keep out", this tunnel is actually refurbished to allow hikers like me to see what it would have been like to work in the tunnels and shafts back in the day!
These pictures were taken in New Almaden, which is in South San Jose. It is at the Almaden Quicksilver Mines, and this particular day I did about a 10 mile loop and this was about 3/4 the way. Quicksilver is Mercury, which is mined from the rock cinnabar.