We were climbing in Sabino Canyon in Arizona when we came across this structure. It has no doors or windows, and it’s at the top of an imposing bluff. The building has an underground portion, as a flashlight couldn’t shine to the bottom.
closed as off-topic by Semidiurnal Simon, Fred, Communisty, bon, Jan Doggen Jan 2 '18 at 12:04
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "This question does not appear to be about earth science, within the scope defined in the help center." – Semidiurnal Simon, Fred, Communisty, bon, Jan Doggen
A little googling leads here
"The structure is a water tower - or above-ground storage facility - probably associated with a well to the south and east," said Chris Schrager, a historic preservation specialist with the U.S. Forest Service.