The Scientology 'mine'An interesting side note is that the church of Scientology bought
the Lady Washington Mine to store safely underground, the writings and such, of the founder, L. Ron Hubbard.
(I could see their spot from the Providence mill site when I was there last month.) Some speculate that it may be a bunker/escape kind of thing too as it has a helipad, (for Tom Cruise and Travolta?)
Here are some drone shots of the area on top (the 10th and eleventh videos) but I believe the mine adit that they've fixed up is halfway down the canyon that they don't show in the video. When the drone points east you can see the canyon, and terrain to get a good idea of what the area is like.
On the second of the videos, (the 11th) , at the 4:01 mark, you can see across the river canyon to part of the PHD area.
click here for drone vids