We found this cache in Arizona on February 11, 2015 not too far out of Mesa.
My cell phone geo app led me to this old water tower and this heavy duty piping that is set in concrete
The lid on this cache has two padlocks, one of which can be opened by dialing in the four digit number that is the name of the cache
Dialing in the numbers
Pulling out a long steel tube and not that light either
Here is the fancy screw lid with instructions
I am about to unscrew the lid that is water proof and of high quality
A container that had about a dozen travel bugs
I took two with me back to Saskatchewan, Canada
Now underneath the plastic TB container is yet another smaller steel tube.
Unscrewing the llid from the second steel tube
And that contained this larged LOG BOOK
Signing the log.
We then put everything back together again and I spin the lock numbers and the cache is ready for the next visitor