ahh....tortoise fencing!! thanks for the reminder (laugh).
Best part of our recent school chaperon trip to Havasupi -- miles and miles of 10" high fencing in the middle of the desert.
I have to admit it took me a couple days to figure it out -- what are these ? trash-catchers?
then I saw the signs - "please don't help the tortoises cross the fence!"
we laughed for a long time (car full of teenagers). never did see a tortoise though...