Check out this pair of warning signs, displayed back to back on a sturdy wood post near a popular southern Arizona trail head. Many thanks to "The Curmudgeon" for a hearty laugh, and thought provoking warnings.

Leaving the road head, this sign with its dire warnings is prominently displayed as you head into the back country:

Leaving the back country, as you approach the road head, this sign with its somewhat different set of dire warnings is prominently displayed on the back of the same sign post: