sign along fenceless border
This is just inside the US border, near Organ Pipe Cactus National Monument. There is only a vehicle barrier along this section of the border. The vehicle barrier has been very successful in preventing vehicles from crossing the border. This prime Sonoran Desert area is Congressionally-designated wilderness, and is easily damaged by vehicles.
My Spanish is a bit lacking, but I believe that the sign says something like:
-Don't expose yourself to the elements-
It's not worth the trouble.