This set of pictures is from a couple months spent in Arizona. Out in the desert, I came across an abandoned copper mine which has been sitting untouched for 80 years. I know this because I found the graveyard of the miners who worked and died in it.
(Note: I had a MSA 4 gas detector, emergency plan, propper equipment, and I'm slighly crazy =) DONT try this without propper training)
Entrance was a 20' rappel
Just down inside the opening
The descent
150 feet down
Thought this was the end till I crawled through the little "window" on the right side.
It keeps going.... (about 300 feet underground by now)
Ceiling was about 20" high. Had to crawl through in some spots, I guess they though the ceiling needed some help? =P
Ended in a flooded passageway. What an adventure!